1.) What is the key difference between mass and weight?
A )Mass is measured in Newtons
B )Weight is measured in grams or kilograms
C ) Weight is equal to mass x gravity

2.) In terms of particles, what is the difference between a liquid and a solid?
A) a liquid has more thermal energy than a solid
B) a solid has more thermal energy than a liquid
C) Both solids and liquids have the same amount of thermal energy

3.) A mixture is...
A) a pure substance
B) at least two substances chemically combined
C) at least two substances physically combined

4.)In terms of particles, what is the difference between a liquid and a solid?
A) a liquid has more thermal energy than a solid
B) a solid has more thermal energy than a liquid
C) both solids and liquids have the same amount of thermal energy