States of Matter
What are the three most common states of matter?
Solid, liquid, gas
What term describes a mixture that has the same composition throughout?
Homogeneous mixture
The formula for density.
Density = mass รท volume
Is melting butter a physical or chemical change?
Physical change
Give one clue that a chemical reaction has occurred.
Examples: color change, temperature change, gas production, precipitate formation.
Which state of matter has a definite shape and definite volume?
Solid
What do we call a mixture where you can see the different parts, like a salad?
Heterogeneous mixture
If a block has a mass of 20 g and a volume of 5 mL, what is its density?
4 g/mL
Is burning wood a physical or chemical change?
Chemical change
What law says that matter cannot be created or destroyed during a chemical reaction?
Law of Conservation of Mass
Which state of matter has particles far apart, moving very quickly, and no definite shape or volume?
Gas
Salt water is this type of mixture.
Homogeneous mixture
Name one physical property of matter.
Examples: color, melting point, boiling point, density, solubility, state of matter.
What do you call a change in matter that does not produce a new substance?
Physical change
What is the term for a solid that forms from a solution during a chemical reaction?
Precipitate
During which process does a solid change directly into a gas?
Sublimation
Brass is an example of what type of mixture?
Homogeneous mixture (alloy)
Name one chemical property of matter.
Examples: flammability, reactivity, ability to rust, ability to decompose.
What do you call a change in matter that produces one or more new substances?
Chemical change
When dry ice turns directly from a solid to a gas, what is this process called?
Sublimation