Classification of Matter
Which type of matter will retain its shape and volume if you move it into a different container?
Solid
What is the term for the process by which a substance changes from a solid to a liquid?
Melting
Frying an egg is an example of which type of change?
Chemical
What is the formula for calculating density?
density = mass/volume
What is the basic building block of all matter?
Atom
This term describes the change from a gas to a liquid.
Condensation
Cutting a piece of paper into smaller pieces is an example of what type of change?
Physical Change
A solid object will float in a liquid if its density is less than the density of the liquid. What happens if the object's density is greater than the density of the liquid?
The object will sink
A mixture in which the components are evenly distributed (uniform in composition) is called a:
A) Homogeneous mixture
B) Heterogeneous mixture
C) Compound
D) Element
A) Homogeneous mixture
When a substance changes directly from a solid to a gas without passing through the liquid state, it is called this.
Sublimation
When iron rusts, is this a physical or chemical change?
Chemical Change
If Object A has a density of 2 g/cm³ and Object B has a density of 4 g/cm³, which object is denser?
Object B
Which of the following is NOT a pure substance?
A) Element
B) Mixture
C) Compound
Mixture
What is the term for the temperature at which a liquid turns into a gas?At what temperature does water freeze on the Celsius scale?
Boiling Point
When ice melts into water, is this a physical or chemical change?
Physical Change
The mass of an object is 10 grams. It occupies a container with a volume of 5 cm^3. What is the density of the object?
2 g/cm^3
What happens to the particles of a sample of water as it is changed into ice?
They become more compact
The process of a gas changing directly into a solid is known as what?
Deposition
What happens to the total mass of substances during a chemical change?
It remains constant!
An object has a density of 100 g/cm^3. It occupies a volume of 50 cm^3. What is the object's mass?
5,000 g