Question 1

Which state of matter is characterized by having a definite shape and volume, with particles arranged in a regular, fixed geometric pattern?

Accepted Answer

Solid

Question 2

Which of the following is a chemical property?

Accepted Answer

Burning coal

Question 3

Potassium is a solid at room temperature. This is an example of which type of property?

Accepted Answer

Physical property

Question 4

Sodium added to water produces hydrogen gas and a water solution of sodium hydroxide. What type of change is this?

Accepted Answer

Chemical change

Question 5

Which of the following mixtures is homogeneous?

Accepted Answer

Sparkling wine (champagne)

Question 6

Which of the following substances is a compound?

Accepted Answer

Calcium carbonate

Question 7

When ice melts, what type of change occurs?

Accepted Answer

Physical change

Question 8

Which of the following is an example of an exothermic process?

Accepted Answer

Burning coal

Question 9

Which statement best describes a heterogeneous mixture?

Accepted Answer

Its components are not evenly distributed.

Question 10

A student mixes salt and water and observes that the salt dissolves completely. What type of mixture is formed?

Accepted Answer

Homogeneous mixture

Question 11

Which of the following best explains why sodium metal reacts vigorously with water?

Accepted Answer

It is a chemical property of sodium.

Question 12

Which of the following is NOT a physical property?

Accepted Answer

Ability to react with acid

Question 13

Which process involves a change in energy from potential to kinetic?

Accepted Answer

A ball rolling down a hill

Question 14

Which of the following best describes the energy change when coffee cools down after being poured?

Accepted Answer

Exothermic, energy released by coffee

Question 15

Which of the following is a chemical change?

Accepted Answer

Burning coal

Question 16

Which of the following best describes a compound?

Accepted Answer

A substance made of two or more elements chemically combined

Question 17

Which of the following is a physical change?

Accepted Answer

Melting ice

Question 18

Which of the following is a homogeneous mixture?

Accepted Answer

Well-stirred sugar water

Question 19

Which of the following best describes the process of boiling water?

Accepted Answer

Physical change

Question 20

Which of the following statements about energy is correct?

Accepted Answer

Kinetic energy is the energy of motion.

States of Matter, Properties, and Energy in GOB Chemistry

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