*09/01/2023*

haha 'yaw ko na mag-aral

DOST, UPCAT, PUPCET, ACET, DCAT, USTET, PLMAT, etc.

Operating as usual

haha 'yaw ko na mag-aral

solar flare

skill issue

ATTENTION FUTURE SCHOLARS ❗️❕❗️❕

Mark your calendars because InfiniTeach is having again a 5-Day Review Project via Zoom!

This is for the second batch where we added more subjects and upgraded our existing lessons.

The review is composed of:

- 10 interactive sessions covering the essential subjects included in every CETs and Scholarship Exams

- Mock tests including the solutions and explanations for each of the subject

- Lecturers who are latest passers of UPCAT, DOST, UP, PUP, Ateneo and more!

- Tips and tricks to pass the exam

For inquires and reservations, message us at InfiniTeach.

OK ZOOMERS CET and Scholarship Exam Review

Batch 1 (July 20-24)

From the first day to fifth

First Day of our OK ZOOMERS CET and Scholarship Exam Review (first batch).

ATTENTION FUTURE SCHOLARS ❗️❕❗️❕

Mark your calendars because InfiniTeach is having a 5-Day Review Project via Zoom!

The review is composed of:

- 9 interactive sessions covering the essential subjects included in every CETs and Scholarship Exams

- Mock tests including the solutions and explanations for each subject

- Lecturers that are some of the latest passers of UPCAT, DOST, UP, Ateneo and more!

- Tips and Tricks to pass the exam

For inquires message us at InfiniTeach or call us at 09454066850/09054566545

OK ZOOMER.

Bite-Sized Review #56

(for DOST, UPCAT, PUPCET, ACET, DCAT, USTET, PLMAT, etc.)

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VERTICAL, HORIZONTAL and OBLIQUE ASYMPTOTES

1. To get the vertical asymptote, find the zeroes of the denominator.

2. To get the horizontal asymptote: (let n be the degree of numerator and m for the denominator)

a. If m> n, then horizontal asymptote is y = 0

b. If m = n, the horizontal asymptote is the quotient of the leading coefficient of the numerator and the leading coefficient of the denominator

c. If n>m, then there is no horizontal asymptote and oblique asymptote must occur

3. To get the oblique asymptote (only occurs if the degree of numerator is bigger than the degree of denominator), divide the numerator and the denominator (preferably using long polynomial division)

*Question's in the next image

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Source: https://www.onlinemathlearning.com/logarithmic-expressions-2.html

For reviewers, visit: https://www.youtube.com/channel/UCTkzgZh-Nde57PSqDQrK9XA

Bite-Sized Review #55

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Question #55: How long will it take for 24g of C-14 to reduce into 1.5g (C-14 has a half-life of 5,730 years)?

a. 17 190 years

b. 22 920 years

c. 28 650 years

d. 5 730 years

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HALF-LIFE

Half-Life is the time it takes for a given amount of subtance to be reduced by half due to nuclear decay (emission of radiation)

The half-life of isotopes from some sample elements:

oxygen 16 – infinite

uranium 238 – 4,460,000,000 years

uranium 235 – 713,000,000 years

carbon 14 – 5,730 years

cobalt 60 – 5.27 years

silver 94 - .42 seconds

Example: 10g of cobalt-60 (half-life = 5.27 years)

10g - 5.27 years (one half-life)

5g - 10.54 years(two half-life)

2.5g - 15.81 years (three half-life)

1.25g - 21.08 years (four half-life)

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Source: https://chem.libretexts.org/

For reviewers, visit: https://www.youtube.com/channel/UCTkzgZh-Nde57PSqDQrK9XA

Bite-Sized Review #54

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LOGARITHMIC LAWS

*Question's in the next image

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Source: https://www.onlinemathlearning.com/logarithmic-expressions-2.html

For reviewers, visit: https://www.youtube.com/channel/UCTkzgZh-Nde57PSqDQrK9XA

Join our short Zoom Webinar Review for Free.

The topic for this session is about Circuit and Electricity which of the most common source of question specially to assess how logical the examines are.

Topic: Electricity and Circuits

Time: Jul 3, 2020 01:00 PM

Join Zoom Meeting

https://us04web.zoom.us/j/71018256804?pwd=Sk1CcllPT0RJRjloa0ZXbGZWUnIzQT09

Meeting ID: 710 1825 6804

Password: 6a1ihF

Bite-Sized Review #53

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CELL THEORY

Add-on Question: Who were the two scientist that founded cell theory in the 1830s?

a. Theodor Schwann and Matthias Jakob Schleiden

b. Robert Hooke and Rudolph Virchow

c. Robert Brown and Theodor Schwann

d. Robert Hooke and Anton van Leeuwenhoek

Bite-Sized Review #52

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Question #52: Given that tan θ = 4, find the values of sin θ and cos θ?

a. sin θ = 4√17 / 17; cos θ = √17 / 17

b. sin θ = 4√5 / 5; cos θ = √5 / 5

c. sin θ = 4√7 / 7; cos θ = √7 / 7

d. sin θ = 4√15 / 15; cos θ = √15 / 15

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TRIGONOMETRIC FUNCTIONS

Each of the trigonometric function corresponds to the ratio of the two sides of the triangle

The ratio stays the same regardless of the size of the triangle as long as we evaluate the same angle.

Hint for the question:

*Use tan θ = sin θ / cos θ

*Use pythagorean theorem

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Source:https://www.mathsisfun.com/sine-cosine-tangent.html

For reviewers, visit: https://www.youtube.com/channel/UCTkzgZh-Nde57PSqDQrK9XA

Bite-Sized Review #51

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Question #51: Which of the following sets of sides can construct a triangle?

a. 15, 25, 50

b. 30, 20, 10

c. 5, 10, 15

d. 10, 15, 20

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TRIANGLE INEQUALITY THEOREM

The sum of the lengths of any two sides of a triangle must be greater than the length of the third side.

Example:

A typical triangle with a sides 3, 4, 5

3 + 4 > 5 ✔️

3 + 5 > 4 ✔️

4 + 5 > 3 ✔️

If all these conditions are met, hence this triangle is possible to construct.

More Example:

A triangle with sides 3, 5, 10

3 + 5 > 10 ❌

3 + 10 > 5 ✔️

5 + 10 > 3 ✔️

Then this triangle is not possible to build, as the two smaller sides (3, 5) can't meet to form a triangle (as the other side 10 is too large)

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Source:https://www.onlinemathlearning.com/triangle-inequality.html

For reviewers, visit: https://www.youtube.com/channel/UCTkzgZh-Nde57PSqDQrK9XA

Bite-Sized Review #50

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Question #50: What is cot(120°)

a. -√3 / 3

b. -√2 / 2

c. -√3

d. -1 / √2

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TRIGONOMETRIC FUNCTIONS and the UNIT CIRCLE

In (x, y), the x represents the value of cos θ, while the y represents the value of sin θ.

Example:

a. sin(30°) = 1/2

b. sin(π/6) = 1/2

c. cos(30°) = √3/2

d. cos(π/6) = √3/2

By knowing these two, we could arrive to the value of any basic trigonometric function

Example:

tan(θ) = sin θ / cos θ

tan(30°) = sin(30°) / cos(30°)

tan(30°) = (1/2) / (√3/2)

tan(30°) = √3 / 3

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Source:https://courses.lumenlearning.com/boundless-algebra/chapter/trigonometric-functions-and-the-unit-circle/

For reviewers, visit: https://www.youtube.com/channel/UCTkzgZh-Nde57PSqDQrK9XA

Bite-Sized Review #49

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EXPONENT RULES

Question #49: Simplify

(ab)² / ((a+b)² - b²)

a. (a²b²) / (a+2b)

b. (ab²) / (a+2b)

c. a² / b²

d. b²

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Source: https://www.onlinemathlearning.com/exponents-scientific-notation.html

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Bite-Sized Review #48

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QUESTION #48: What force is needed to push a 10kg of rock to move with a velocity of 2m/s in a span of 4 seconds?

a. 1N

b. 2N

c. 5N

d. 10N

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Basic Physics Formula

1. Velocity- rate of change in position over a period of time.

V = Δd/Δt (m/s)

2. Acceleration- rate of change in velocity over a period of time

a = Δv/Δt (m/s²)

3. Force- a push or pull that results to an interaction between objects

F = ma (kg*m/s² or N)

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Source:https://www.thoughtco.com/physical-and-chemical-changes-examples-608338

For reviewers, visit: https://www.youtube.com/channel/UCTkzgZh-Nde57PSqDQrK9XA

While we're on quarantine, why not take the time to review?

NEW REVIEWERS:

Math Part 3: https://youtu.be/rcam-qT0IzI

FOR MORE:

Astronomy: https://youtu.be/pdHJiVFVngg

Earth and Life Science: https://youtu.be/mZcQbRMkET0

General Knowledge 2: https://youtu.be/9kkhub4-kUE

English: https://youtu.be/--ddqD9GCiM

General Science 2: https://youtu.be/tgGG7Ds0eCA

Mathematics 2: https://youtu.be/ZJx5xBan7c8

General Knowledge: https://youtu.be/LHQ7JRQyGF8

General Science: https://youtu.be/JF08t6Bxnxo

Verbal Reasoning: https://youtu.be/dsyfo3bURKQ

Chemistry: https://youtu.be/DGMcrtXkC1Y

Biology: https://youtu.be/dbMp0Ye0mQo

Mathematics: https://youtu.be/lKPo7ZyO6WU

Earth Science: https://youtu.be/gKzWF_ah9GA

Language Proficiency: https://youtu.be/PtRTdSP18KI

College Entrance Exam Reviewer - MATHEMATICS Part III (UPCAT, DOST, PUPCET, etc.) This reviewer about Mathematics is effective for examination like UPCAT, DOST, PUPCET, ACET, DCAT, USTET, PLMAT, SLU, etc. Try to score 8 points or more. Goo...

Bite-Sized Review #47

(for DOST, UPCAT, PUPCET, ACET, DCAT, USTET, PLMAT, etc.)

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QUESTION #47: Which of the following is not a function?

a. y = x²

b. y = (x-2)(x+2)

c. y² = x

d. f(x) = (x+1)²

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FUNCTIONS and its MAPPING

Function -a relation that for each input x, there is only one output y.

*Remember that all functions are relation but not all relations are function.

3 Possible Mappings:

(refer to the image)

a. many to one - many inputs (q, r) to one output (n )

- this relation is function

b. one to one - one input(p) to one output (x)

- this relation is function

c. one to many - one input (q) to many output (y, z)

- this relation is NOT function

Things to Remember:

*One to many is not a function as it does not satisfy the definition of a function.

*Vertical Line Test may use to test if the graph is a function.

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Source:https://www.thoughtco.com/physical-and-chemical-changes-examples-608338

For reviewers, visit: https://www.youtube.com/channel/UCTkzgZh-Nde57PSqDQrK9XA

Bite-Sized Review #46

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QUESTION #46: Which of the following is not a physical change?

a. Vaporizing liquid nitrogen

b. Sublimation of dry ice

c. Heating sugar to form caramel

d. Melting an ice cube

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PHYSICAL VS CHEMICAL CHANGE

A.Physical Change- any change that does not alter the substance's chemical identity

B. Chemical Change- change where chemical bonds are broken and new ones are formed.

To identify which change occurs, look for an indication of chemical change. Then if it satisfies any, then chemical change likely occurs, if no indication is seen, it might be physical change.

Indications of chemical changes

1. Evolving bubbles or releasing gas

2. Absorbing or releasing heat

3. Changing color

4. Releasing an odor

5. Inability to reverse the change

6. Precipitation of a solid from a liquid solution

7. Formation of a new chemical species

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Source:https://www.thoughtco.com/physical-and-chemical-changes-examples-608338

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Bite-Sized Review #45

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Add-on Question #45: What is the brightest star as observed from the Earth?

a. Sirius A

b. North Star

c. Betelgeuse

d. None of the Above

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ABSOLUTE VS APPARENT MAGNITUDE

1. Absolute Magnitude- the actual brightness of a star

2. Apparent magnitude- the brightness of a star as seen from the Earth

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Source: Sagar Khillar. "Difference Between Absolute and Apparent Magnitude." DifferenceBetween.net. August 27, 2019 < http://www.differencebetween.net/science/difference-between-absolute-and-apparent-magnitude/ >.

For reviewers, visit: https://www.youtube.com/channel/UCTkzgZh-Nde57PSqDQrK9XA

Bite-Sized Review #44

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Add-On Question # 44: It is a fast-moving current of hot gas and volcanic matter that travels at high speed?

a. Tephra

b. Caldera

c. Pyroclastic Flow

d. Lahar

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TYPES OF VOLCANO

1. Cinder Cone- the most common type that has cone characteristic with less viscous magma.

2. Composite (or stratovolcano)- tall conical volcano composed of alternating layer of lava-flow. Its highly viscous magma builds up pressure, causing a violent eruption.

3. Shield- huge, gently slope built of thin lava spreading out from the central vent. Its eruption are not explosive.

4. Lava Dome- small, circular volcano formed by the piling of highly viscous lava. Usually found within the crater or on the sides of composite volcanoes.

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Source: https://www.sciencefacts.net/types-of-volcanoes.html

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Bite-Sized Review #43

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Question #43: If the temperature of a gas is reduced to a quarter, what will happen to its volume when pressure is constant?

a. volume is reduced to its half

b. volume is also reduced to a quarter

c. volume is doubled

d. volume is quadrupled

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GAS LAWS

1. Boyle's Law- as pressure increases, volume decreases (at constant T)

2. Charle's Law- as volume increases, temperature increases (at constant P)

3. Gay-Lussac's Law- as pressure increases, temperature increases (at constant V)

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Bite-Sized Review #42

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FORMULA WHEEL OF ELECTRICAL ENERGY

DEFINITION:

Voltage- difference in charge between two points

Current- rate of flowing charge

Resistance- tendency to resist the flow of charge

Power- energy transferred per time

UNITS:

Voltage(V)- Volts

Current(I)- Ampere

Resistance(R)- Ohms(Ω)

Power (P)- Watts

BASED FORMULA:

V = IR

P = IV

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QUESTION #42: How many volts is needed to push 10 amps of current sustaining 5 watts of power?

a. 0.5 volts

b. 1 volt

c. 5 volts

d. 50 volts

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Lesson Source: http://www.sengpielaudio.com/calculator-ohm.htm

For reviewers, visit: https://www.youtube.com/channel/UCTkzgZh-Nde57PSqDQrK9XA

Greetings. The result for UPCAT was already posted and by sheer luck, I passed. Also, I'm very fortunate to passed other exams like DOST, SM Scholarship, etc.

So I wanted to bring back the favor by sharing some reviewers for the incoming takers.

Tips and strategies (exact) will also be posted soon, I hope it will help

NEW REVIEWERS:

Astronomy: https://youtu.be/pdHJiVFVngg

Earth and Life Science: https://youtu.be/mZcQbRMkET0

FOR MORE:

General Knowledge 2: https://youtu.be/9kkhub4-kUE

English: https://youtu.be/--ddqD9GCiM

General Science 2: https://youtu.be/tgGG7Ds0eCA

Mathematics 2: https://youtu.be/ZJx5xBan7c8

General Knowledge: https://youtu.be/LHQ7JRQyGF8

General Science: https://youtu.be/JF08t6Bxnxo

Verbal Reasoning: https://youtu.be/dsyfo3bURKQ

Chemistry: https://youtu.be/DGMcrtXkC1Y

Biology: https://youtu.be/dbMp0Ye0mQo

Mathematics: https://youtu.be/lKPo7ZyO6WU

Earth Science: https://youtu.be/gKzWF_ah9GA

Language Proficiency: https://youtu.be/PtRTdSP18KI

Bite-Sized Review #40

(for DOST, UPCAT, PUPCET, ACET, DCAT, USTET, PLMAT, etc.)

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QUESTION #40:

A line has a slope of 2 and a y-intercept of 5. What is its x-intercept?

a. 10

b. -10

c. 5

d. -2.5

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X and Y INTERCEPT

1.) X-intercept: point where the graph crosses the x-axis (where y = 0). To find x-intercept, simply let y = 0, then find x.

2.) Y-intercept: point where the graph crosses the y-axis (where x = 0). To find y-intercept, simply let x = 0, then find y.e

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Bite-Sized Review #41

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QUESTION #41: Which of the chemical reaction correctly represents the decomposition of ammonia into hydrogen and nitrogen gas?

a. 2NH3 → N2 + 3H2

b. NH3 → 2N2 + H2

c. N2 + 3H2 → 2NH3

d. 2N2 + H2 → NH3

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MAJOR TYPES OF CHEMICAL REACTION

1. Combination or Synthesis reaction- two or more subtance combine into a single new subtance.

A + B → AB

Example: 8 Fe + S8 → 8 FeS

2. Decomposition reaction- compound breaks into simpler subtances.

AB → A + B

Example: 2 H2O → 2 H2 + O2

3. Single replacement reaction- one element replaces other element in a compound.

A + BC → AC + B

Example: Zn + 2 HCl → ZnCl2 + H2

4. Double replacement reaction- two compounds exchange ions forming two new compounds.

AB + CD → AD + CB

Example: NaCl(aq) + AgNO3(aq) → NaNO3(aq) + AgCl(s)

5. Combustion reaction- substance reacts with oxygen usually produce carbon dioxide (CO2) and water (H20)

Example: CH4 + O2 → CO2 + H20

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Image Source: https://www.thoughtco.com/types-of-chemical-reactions-604038

Lesson Source: https://chem.libretexts.org/

For reviewers, visit: https://www.youtube.com/channel/UCTkzgZh-Nde57PSqDQrK9XA

Bite-Sized Review #39

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Add-on Question #39: Which of the following type of colloid is exhibited when a liquid material is dispersed in gas?

a. Emulsion

b. Foams

c. Smokes

d. Fogs

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Classification of Matter

Matter is divided into two based on the composition.

I. Mixture- combination of two or more pure subtances

1. Homogeneous mixture- uniform apperance

a. Solution- combination of particles(mixture) but still appear in one phase

2. Heterogeneous mixture- not uniform

a. Suspension- larger particles than solution that eventually settle out

b. Colloid- particles distributed but do not settle out

II. Pure Subtance- one type of particle that are alike

1. Element- same type of atom

2. Compound- elements that are chemically combined

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Image Source: (https://sites.google.com/site/thestudyofmaterials/1-matter-and-its-properties/2-classification-of-matter)

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Bite-Sized Review #38

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QUESTION #38: What type of collision took place between the India and the Eurasian plate that gave rise to the formation of Himalaya Mountains?

a. Converging Continental and Oceanic

b. Diverging Two Oceanic Plates

c. Converging Two Continental Plates

d. Diverging Two Continental Plates

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TYPES OF PLATE BOUNDARIES

1. Convergent boundary- two plates do a head-on-collision.

a. Converging Continental and Oceanic Plate- the denser oceanic plate submerge into the mantle (in the process called subduction).

Geological feature/events: Volcanic arcs, trenches, and earthquake

b. Converging Two Oceanic Plates- older oceanic plate(denser), subducts.

Geological feature/events: Volcanic arcs, trenches, and earthquake

c. Converging Two Continental Plates- very little subduction takes place, instead crust fold and pile up

Geological feature/events: Mountain ranges, earthquake

2. Divergent boundary- two plates move away from each other.

Geological feature/events: Earthquakes

a. Underwater- mid-ocean ridge is formed

b. Continent- rift valley is formed

3. Transform plate boundary- adjacent plates move in opposite directions (grind on each other).

Geological feature/events: Earthquake

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Image Source: Domdomegg / Wikimedia Commons / CC BY 4.0

Lesson Source: https://www.slideshare.net/daniholic/science-grade-10-learners-module

For reviewers, visit: https://www.youtube.com/channel/UCTkzgZh-Nde57PSqDQrK9XA

Bite-Sized Review #37

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Question #37: What two monossaccharides form a maltose (dissacharide) when link together?

a. glucose + glucose

b. glucose + galactose

c. glucose + fructose

d. glucose + sucrose

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4 MAJOR CLASSES OF BIOMOLECULES

1. Carbohydrates

-Function: Main source of energy and for structural support in cell

-Monomer: Monosaccharides

-Elements: CHO (1:2:1 ratio)

-Examples: Glucose, fructose, and galactose

2. Lipid

-Function: Insulation, long-term energy

-Monomer: Glycerol and Fatty acids

-Elements: CHO (greater 2:1 H:O ratio)

-Example: triglycerides, phospholipids, carotenoids and steroids

3. Protein

- Function: Muscle developments, Defensive (Immune System), Enzyme

-Monomer: Amin acids

-Elements: CHON

-Examples: Enzymes, some hormones

4. Nucleic Acid

-Function: Genetic Information

-Monomer: Nucleotides

-Elements: CHONP

-Examples: DNA, RNA

*Monomer- building block of the molecules that can form longer chains of polymers

*For the Elements, C – Carbon, H – Hydrogen, O – Oxygen, N – Nitrogen, P – Phosphorus

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Bite-Sized Review #36

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QUESTION #36: How can you separate and obtain the components in a salt and sand mixture (proper order)?

a. Dissolution, Decantation and Evaporation

b. Decantation, Filtration and Evaporation

c. Filtration, Evaporation and Decantation

d. Evaporation, Dissolution and Filtration

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Methods for Separating Mixtures

1. Filtration- separation of insoluble solid (residue) from a liquid using porous barrier

2. Evaporation- extraction of dissolved solid via boiling of solution until no liquid remains

3. Simple Distillation- simple separation through evaporation and condensation where their is large difference in boiling points.

4. Fractional Distillation- complex separation (same as simple) but used when their is less difference in boiling points

5. Magnetism- separation of two solids with one part having magnetic property

6. Chromatography- separation of molecules based on differences in size, polarity, solubility; via moving solvent on filter paper

7. Decantation- separation of immiscible subtances by letting the denser part settle and pouring the lighter

8. Centrifuging- separation of particles from a solution by the application of centrifugal force (rotation)

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Lesson Source: http://steamism.com/physics-types-of-energy/

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Bite-Sized Review #35

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Question #35. Which of the following would speed up the rate of dissolving of a sugar in a solvent?

a. Increasing the pressure

b. Using grease instead of water as solvent

c. Using powdered sugar instead of granulated

d. All of the above

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FACTORS AFFECTING SOLUBILITY

1. Nature of Solute and Solvent - Polar and ionic solutes dissolve in polar solvent (water)

-Nonpolar solutes are soluble in nonpolar solvents

2. Temperature

Solid in Liquid: higher the temperature, higher the solubility

Gas in Liquid: higher the temperature, lower the solubility

3. Pressure

Solid in Liquid: not affected

Gas in Liquid: higher the pressure, the higher the solubility

4. Surface Area

-Higher the SA, higher the solubility

-To increase SA, break down the solute to smaller pieces

5. Stirring

-Stirring increase solubility as solute interact more with the solvent

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Bite-Sized Review #34

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COMPARATIVE ANATOMICAL STRUCTURES

1. Homologous structures- structures that are similar because these were inherited from a common ancestor

2. Analogous structures- features that evolved to do the same function

3. Vestigial structures- features that still remain but serve no function (eg. appendix on humans)

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Question #34: The forelimbs of a whale and forelimbs of a bat are considered to be?

a. Homologous structures

b. Analogous structures

c. Vestigial structures

d. None of the Above.

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Bite-Sized Review #33

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FORMS OF ENERGY (Definition is already on the image)

1. Kinetic Energy

Types: a. Mechanical Energy- moving car

b. Electrical Energy- lightning

c. Thermal Energy- heat from magma

d. Radiant Energy- light from the sun

e. Sound Energy- voice

2. Potential Energy

Types: a. Chemical Energy- fuels like coal

b. Nuclear Energy- fission and fusion

c. Gravitational Energy- waterfall

d. Elastic Energy- spring

Remember: There are 2 types of energy that corresponds to different forms.

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Question #33: If the bob of a pendulum is at the highest point, what form of energy is also at its maximum?

a. Gravitational Energy

b. Chemical Energy

c. Mechanical Energy

d. Elastic Energy

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Bite-Sized Review #32

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Main Systems of the Human Body

1. Circulatory- circulates blood, delivering oxygen and nutrients and carrying their waste products

2. Digestive System- allows food to enter where nutrients are absorbed and waste are excreted.

3. Excretory (Urinary) system- filter blood, and remove toxins from body tissues

4. Endocrine- influence the body using hormones

4. Integumentary System- encloses the body and act as the first line of defense against pathogens

5. Immune system- defends the body against pathogens; includes the lymphatic system that carry lymph (fluid)

6. Muscular system- enables movement through muscles

7. Nervous system- process information from sense via nerves; control both voluntary and involuntary responses

9. Reproductive- responsible for the production of offspring

10. Respiratory- brings air into and out of the lungs to absorb oxygen and remove carbon dioxide

11. Skeletal- maintain the structure of the body

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Add-on Question #32: Spleen, where RBC are recycled, belongs in what organ system?

a. Endocrine

b. Lymphatic

c. Integumentary

d. Digestive

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