Chapter 1/Lesson 4

Question 1

States of Matter

Answer 1

Solid, Liquid and Gas

Question 2

Chemical Changes

Answer 2

Change in matter that produces one or more new substances. New substances have new properties.

Question 3

Combustion

Answer 3

The chemical change of a fuel into other substances.

Question 4

Law of Conservation of Mass

Answer 4

The fact that matter is not created or destroyed in any chemical change.

Question 5

Energy

Answer 5

The idea of work or change. Any change in matter is a change in energy.

Question 6

Temperature

Answer 6

A measure of how hot or cold a substance is. Its a measure of the motion of particles in a substance.

Question 7

Thermal Energy

Answer 7

Total energy of the motion of all the particles of an object.

Question 8

Flow of Thermal Energy

Answer 8

Thermal energy flows from high temperature to low temperature.

Question 9

Endothermic

Answer 9

Change in which energy is absorbed.

Question 10

Exothermic

Answer 10

Change in which energy is released; combustion.

Question 11

Chemical Energy

Answer 11

Energy stored in the the chemical bonds between atoms.