Which of the below are a compound?
Helium
Water
Carbon
Carbon Dioxide
CO
Sugar
Zinc
Which of the below is a mixture?
Bronze alloy
Air
Salt water
Salt
Which of the following is a heterogeneous mixture?
Soil
Iron
Pizza
Salt Water
Alcohol solution
Which of the following are physical changes?
photosynthesis
liquid water turning into ice
wood burning
copper wire bending
bread baking
water evaporating
Which of the following observations would indicate a chemical reaction has occurred?
color change
temperature change
precipitate forms
gas is produced
mass has changed
If you wanted to separate sand from water, which method of separation would you use?
distillation
filtration
osmosis
If you wanted to separate alcohol from water, two liquids, which method would you use?
Elements can be broken down into other forms of matter.
Compounds can be broken down into other substances.
Matter can be created and destroyed.
