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Science Grade 10 > Given reviewer > Flashcards

Given reviewer Flashcards

1
Q

Convert 6.7 to millimeters.
A. 0.0067 mL
B. 0.0088 mL
C. 5092 mL
D. 6700 mL

A

A. 0.0067 mL

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2
Q

You drove continuously from Bogo to Santander, and you observed that the pressure in your tires increased. This is because of the increased temperature outside the tire caused by friction.
A. True
B. False
C. Both A and B are correct
D. None of the above

A

A. True

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3
Q

A bottle is filled with oxygen and sealed at room temperature. The bottle is then left in a hot car. According to Charles’ law, the pressure in the bottle will increase from heating.
A. True
B. False
C. Both A and B are correct
D. None of the above

A

A. True

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4
Q

To use Gay-Lussac’s law, which of the following needs to remain constant
A. Volume
B. Pressure and temperature
C. Temperature
D. Pressure

A

A. Volume

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5
Q

If the temperature of a gas increases, what happens to the pressure?
A. Pressure will remain unchanged
B. Pressure will increase
C. Pressure will decrease
D. All of the above

A

A. Pressure will remain unchanged

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6
Q

Which of the following is a correct pair
A. triglyceride: polysaccharide
B. glucose: disaccharide
C. starch: polysaccharide
D. sucrose: monosaccharide

A

C. starch: polysaccharide

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7
Q

It is the brown pigment in human skin.
A. Keratin
B. Melanin
C. Chitin
D. Amylase

A

B. Melanin

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7
Q

Lipids are insoluble in water because lipid molecules are
A. Hydrophilic
B. Neutral
C. Zwitterions
D. Hydrophobic

A

D. Hydrophobic

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8
Q

What is the term for a digit in front of a chemical formula that helps to balance a chemical equation?
A. Coefficient
B. Subscript
C. Superscript
D. Exponent

A

A. Coefficient

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8
Q

Which group of organic molecules is used for long-term storage in animals?
A. Nucleic Acid
B. Protein
C. Carbohydrate
D. Lipids

A

D. Lipids

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9
Q

What is monomer?
A. A building black (single unit)
B. A protein
C. String of Units
D. A lipid

A

A. A building black (single unit)

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10
Q

Nutritional chemists have found that burning 1 gram of fat releases twice the amount of heat energy as burning 1 gram of starch. Based on this information, which type of biomolecule would cause a person to gain more weight?
A. Nucleic Acid
B. Protein
C. Carbohydrate
D. Lipid

A

C. Carbohydrate

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11
Q

Which of the following makes up lipids?
A. Glycerol and fatty acids
B. Amino acids and nucleotides
C. Fatty acids and phospholipids
D. Glycerol and monolipids

A

A. Glycerol and fatty acids

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12
Q

What is the coefficient of chlorine gas (Cl2) after balancing the following equation?
_Fe(s) + _Cl2(g) ⟶ _FeCl3(s)
A. 1
B. 4
C. 3
D. None of the above

A

C. 3

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13
Q

What is the coefficient of ammonia gas (NH3) after balancing the following equation?
_N2(g) + _H2(g) ⟶ _NH3(g)
A. 3
B. 4
C. 2
D. None of the above

A

C. 2

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14
Q

Which of the following equations is not balanced?
A. CaCO3 ⟶ CaO + CO2
B. 2NaHCO3 + H2SO4 ⟶ Na2SO4 + 2H2O + CO2
C. 2NO + O2 ⟶ 2NO2
D. 2Mg + O2 ⟶ 2MgO

A

B. 2NaHCO3 + H2SO4 ⟶ Na2SO4 + 2H2O + CO2

15
Q

Which two gas properties are INVERSELY related?
A. Pressure and volume
B. Volume and temperature
C. Volume and moles of gas
D. Molar mass and volume

A

A. Pressure and volume

16
Q

A hypothetical gas that perfectly fits all the assumptions of the kinetic-molecular theory is known as
A. a real gas
B. an ideal gas
C. an imaginary gas
D. a perfect gas

A

B. An ideal gas

17
Q

According to Boyle’s law, when the pressure of a gas increases at constant temperature, its volume
A. increases
B. stays constant
C. decreases
D. increases, then decreases

A

C. decreases

17
Q

When the temperature of a gas decreases at a constant volume, its
A. pressure increases
B. mass increases
C. pressure decreases
D. particles move faster

A

C. pressure decreases

18
Q

According to Charles’ law, when the temperature of a gas increases at constant pressure, its
A. volume increases
B. mass increases
C. volume decreases
D. particles move more slowly

A

A. volume increases

19
Q

Which Gas law is involved when a balloon pops after being sat on?
A. Charles’ Law
B. Boyle’s Law
C. Law of Pressure Gradient
D. None of the Above

A

B. Boyle’s Law

20
Q

A solid is a state of matter that has a(n)
A. indefinite volume and an indefinite shape
B. definite volume and a definite shape
C. definite volume and an indefinite shape
D. indefinite volume and a definite shape

A

C. definite volume and an indefinite shape

21
Q

Which state of matter undergoes changes in volume most easily?
A. solid
B. liquid
C. gas
D. frozen

A

C. gas

22
Q

Which of the following will occur as the speed of the molecules in a substance increases?
A. The substance will become cooler
B. The substance will begin to take up less space
C. The force of attraction between the molecules will decrease
D. The force of attraction that draws objects to Earth will increase

A

C. The force of attraction between the molecules will decrease

22
Q

Which statement is false?
A. The density of gas is constant as long as its temperature remains constant.
B. Gases can be expanded without limit.
C. Gases diffuse into each other and mix almost immediately when put into the same container.
D. The molecular weight of a gaseous compound is a non-variable quantity.

A

A. The density of gas is constant as long as its temperature remains constant.

22
Q

Which of the following is not a postulate of Kinetic molecular theory of gases?
A. The actual volume of gas molecules is negligible
B. There are high forces of attraction between the gas molecules
C. Collisions are elastic in gas molecules
D. Kinetic energy of gas molecules is directly proportional to the absolute temperature.

A

B. There are high forces of attraction between the gas molecules

22
Q

Which of the following statements do you think is the correct one?
A. In gases there is a predominance of intermolecular energy
B. All molecules have the same speed at different temperatures
C. Collisions of gas molecules are elastic
D. Do not exert the same pressure in all directions

A

C. Collisions of gas molecules are elastic

23
Q

A gas occupies 12.3 liters at a pressure of 40.0 mmHg. What is the volume when the pressure is increased to 60.0 mmHg?

A

8.2 L

24
Q

A gas occupies 900.0 mL at a temperature of 27.0 °C. What is the volume at 132.0 °C?

A

1215 ml

25
Q

Determine the pressure change when a constant volume of gas at 1.00 atm is heated from 20.0 °C to 30.0 °c.

A

1.03 atm

26
Q

A gas has a volume of 800.0 mL at -23.0 °C and 300.0 torr. What would the volume of the gas be at 227.0 °C and 600.0 torr of pressure?

A

800 ml

27
Q

690.0 mL of oxygen are collected over water at 26.0 °C and a total pressure of 725.0 mm of mercury. What is the volume of dry oxygen at 52.0 °C and 800.0 mm pressure?

A

680 ml

Science Grade 10 (2 decks)

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