SCIENCE Q4

Quiz by FJM

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55 questions
• Q1

Why is gas easier to compress than a liquid or a solid?

The space between gas particles is much less than the space between liquid or solid particles.

The volume of gas particles is small compared to the overall volume of gas.

Its volume increases more under pressure than an equal volume of liquid does.

Its volume increases more under pressure than an equal volume of solid does.

30s
• Q2

If a balloon is squeezed, what happens to the pressure of the gas inside the balloon?

It increases.

The pressure depends on the type of gas in the balloon.

It stays the same.

It decreases.

30s
• Q3

According to Charles’ Law, as the volume occupied by a given sample of gas at constant pressure is decreased, the temperature will __________.

become zero.

The change cannot be predicted.

decrease

increase

30s
• Q4

Which of these changes would NOT cause an increase in the pressure of a gaseous system?

The temperature is increased.

Another gas is added to the container.

30s
• Q5

If the temperature remains constant, V1 and P1 represent the original volume and pressure, and V2 and P2 represent the new volume and pressure, what is the mathematical expression for Boyle’s law?

P2V1 = V2P1

V1 = V2P2/P1

V1V2 = P1P2

V1P1 = V2P2

30s
• Q6

A sample of oxygen occupies 560 mL when the pressure is 800 mm Hg. At constant temperature, what volume does the gas occupy when the pressure decreases to 700 mm Hg?

490 mL

640 mL

80 mL

600 mL

30s
• Q7

How do the particles behave when the Kelvin temperature of an enclosed gas is doubled?

Particles strike the walls of the container with less force

Particles decrease their average kinetic energy.

Particles occupy a smaller volume

Particles move faster

30s
• Q8

Which statement best explains why a hot-air balloon rises when the air in the balloon is heated?

Some of the gas escapes from the bottom of the balloon, thus decreasing the mass of gas in the balloon. This decreases the density of the gas in the balloon, which lifts the balloon.

The temperature of the gas is directly related to its pressure. The pressure therefore increases, and this lifts the balloon.

Hot air rises inside the balloon, and this lifts the balloon.

The temperature of a gas is directly related to its volume. Thus, the volume of the balloon increases, making the density smaller. This lifts the balloon.

30s
• Q9

Which phenomenon best illustrates Charles’ Law?

Breathing apparatus being used by a patient.

Carbon dioxide is dissolved in water.

The leavening agent causes the fluffiness of cake products.

Expansion of the balloon as it is being submerged in hot water.

30s
• Q10

If the temperature of a fixed quantity of gas decreases and the pressure remains unchanged, __________.

its volume becomes zero

its volume decreases

its volume is unchanged

its volume increases

30s
• Q11

Which biomolecules are significant features of the cell membrane?

protein and lipid

nucleic acid and protein

lipid and nucleic acid

carbohydrate and nucleic acid

30s
• Q12

Lactose is a disaccharide, formed when glucose and __________ are bonded together.

Galactose

Maltose

Fructose

Glucose

30s
• Q13

Atom is the basic unit of a chemical element. What are the atoms that makeup carbohydrates?

C, H, O, N, and P

C, H, O, and N

C, H, and O

C, H, and N

30s
• Q14

The general term for a large molecule made up of many similar subunits is __________.

peptide

helix

functional group

polymer

30s
• Q15

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?

fat

proteins

nucleic acid

carbohydrate

30s

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