Question 1

Which of the following best describes the difference between a compound and a mixture?

Accepted Answer

A compound has a fixed, definite composition with elements chemically bonded, while a mixture contains substances physically combined in variable proportions.

Question 2

Which of the following is an example of a physical change?

Accepted Answer

Boiling water to produce steam.

Question 3

Which property is unique to gases compared to solids and liquids?

Accepted Answer

Gases expand to fill the shape and volume of their container.

Question 4

A student separates a mixture of ethanol and water by heating the mixture and collecting the vapor that condenses first. What is this process called?

Accepted Answer

Distillation

Question 5

Which of the following is a chemical change?

Accepted Answer

Burning propane in a gas stove.

Question 6

Which of the following best describes a homogeneous mixture?

Accepted Answer

A mixture in which the composition is uniform throughout.

Question 7

Which of the following statements about the compressibility of matter is correct?

Accepted Answer

Only gases are easily compressed because their particles are far apart.

Question 8

Which of the following is an example of an element?

Accepted Answer

Helium gas in a blimp.

Question 9

Which of the following best explains why liquids have a definite volume but not a definite shape?

Accepted Answer

The particles in a liquid are close together but can move past each other.

Question 10

Which of the following is a pure substance?

Accepted Answer

Pure water

Question 11

A student observes that when sugar dissolves in water, the resulting solution is clear and uniform throughout. What type of mixture is this?

Accepted Answer

Homogeneous mixture

Question 12

Which of the following best describes the motion of particles in a solid?

Accepted Answer

Particles vibrate but do not pass each other.

Question 13

Which of the following is NOT a physical property?

Accepted Answer

Flammability

Question 14

Which of the following best describes the process occurring when propane gas burns in a stove?

Accepted Answer

A chemical change where propane reacts with oxygen to form new substances.

Question 15

Which of the following is a heterogeneous mixture?

Accepted Answer

Wet sand

Question 16

Which of the following best describes a chemical property?

Accepted Answer

The ability of a substance to react with oxygen.

Question 17

Which of the following is an example of a physical property?

Accepted Answer

Boiling point

Question 18

Which of the following best describes the process of distillation?

Accepted Answer

Separating a mixture based on differences in boiling points.

Question 19

Which of the following is true about the energy changes in physical and chemical changes?

Accepted Answer

Both physical and chemical changes can involve absorption or release of energy.

Question 20

Which of the following best explains why a gas can be compressed but a solid cannot?

Accepted Answer

Gas particles are far apart and can be pushed closer together, while solid particles are already tightly packed.

Chapter 1: Matter, Measurement, and Problem Solving – Study Notes

Guida di studio - Domande di pratica

Study guide - Flashcard