Topic 2

Question 1

Physical Change vs. Chemical

Answer 1

Physical - change in shape but not chemical composition\
( evaporation, cutting, freezing)
Chemical- causes one or more new substances to be formed( burning, cooking,)

Question 2

Chemical Properties

Answer 2

any property that describes how a substance reacts with another substance when forming new substance

eg) combustibility, toxicity, reacts with air ect

Question 3

Physical Properties

Answer 3

any property that can be observed or measured without forming a new substance

eg) density, color, texture

Question 4

Qualitative vs Quantitative

Answer 4

Qualitative- described but not measured(quality) eg. color, texture, state
Quantitative- characteristic of a substance that can be measured numerically( a quanitity) eg. density, melting temp. , solubility