Unit B 1.3

Question 1

Physical change

Answer 1

Change in the appearance or state of a substance that does not change the composition

Question 2

Chemical change

Answer 2

Change that results when two or more substances react to create a different substance or substances; the new substances have completely different properties from the original ones

Question 3

Examples of evidence to look for chemical change

Answer 3

Changes in color, odor, state, or thermal energy during, or result of the reaction between the original substances