Question 1

Which state of matter is characterized by having a definite shape and volume, with particles vibrating in a fixed position?

Accepted Answer

Solid

Question 2

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

Accepted Answer

Reactivity with water

Question 3

Burning coal is best classified as which type of change?

Accepted Answer

Chemical change

Question 4

Which of the following mixtures is homogeneous?

Accepted Answer

Sparkling wine (champagne)

Question 5

When sodium reacts with water to produce hydrogen gas and a solution of sodium hydroxide, what type of change is occurring?

Accepted Answer

Chemical change

Question 6

Which of the following substances is a compound?

Accepted Answer

Calcium carbonate

Question 7

Which process is endothermic?

Accepted Answer

Melting ice

Question 8

A student mixes salt and water. The resulting mixture is best described as:

Accepted Answer

A homogeneous mixture

Question 9

Which of the following statements about gases is correct?

Accepted Answer

Gases have neither definite shape nor definite volume.

Question 10

Which of the following is a physical property?

Accepted Answer

Solubility in water

Question 11

Potassium is a solid at room temperature. This is an example of:

Accepted Answer

Physical property

Question 12

Which of the following best describes the energy change when you let hot coffee cool to room temperature?

Accepted Answer

Exothermic

Question 13

Which of the following is a heterogeneous mixture?

Accepted Answer

Hamburger

Question 14

Which of the following best describes the process of melting ice?

Accepted Answer

Physical change

Question 15

Which of the following statements is true about solids?

Accepted Answer

Particles are arranged in a regular, fixed geometric pattern.

Question 16

Which of the following is NOT a physical property?

Accepted Answer

Ability to form salts with many other elements

Question 17

Which of the following best describes the energy transformation when a bike coasts down a hill?

Accepted Answer

Potential energy to kinetic energy

Question 18

Which of the following is a chemical change?

Accepted Answer

Burning gasoline

Question 19

Which of the following best describes the process of condensation?

Accepted Answer

Gas to liquid

Question 20

Which of the following is true about liquids?

Accepted Answer

Liquids have a definite volume but no definite shape.

Matter and Energy: States, Properties, and Changes in GOB Chemistry

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