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Which of the following would NOT be a physical change?
a. freezing water to make ice cubes
b. melting gold to make jewelry
c. burning gasoline in a lawnmower
d. boiling water to soup
c. burning gasoline in a lawnmower
Which of the following is NOT a physical change?
a. grating cheese
b. melting cheese
c. fermenting cheese
d. mixing two cheeses in a bowl
c. fermenting cheese
How do you define solid?
It has a definite shape and definite volume
Define a liquid
It has definite volume but takes the shape of its container.
Define a gas
a substance without definite volume or shape
What type of mixture is not uniform in composition?
Heterogeneous mixture
Kool-aid, air, salt water are all examples of what type of mixture?
Homogeneous mixture
This mixture has a same uniform composition; called "solutions"
Homogeneous mixture
What are 2 methods for separating mixtures?
Filtration
Chromatography
Distillation
Evaporation
Use of magnet (Magnetism)
What is an example of an element?
any element from the periodic table
This type of substance can be broken down into simpler substances by chemical means (ex. CO2, H2O)
Compounds
What are the 3 states of matter?
Solid, Liquid, and Gas
