Matter Basics
The term for anything that has mass and takes up space
Matter
The state of matter with a fixed shape and fixed volume
Solid
The change of state from solid to liquid
Melting
The two main categories of matter
Mixtures and pure substances
The formula used to calculate density
density = mass ÷ volume
The amount of matter in an object
Mass
The state of matter that takes the shape of its container but has a fixed volume
Liquid
The change of state from gas to liquid
Condensation
Another name for a homogeneous mixture
Solution
The correct unit for density
g/mL or g/cm³
Which of these is NOT matter: heat, oxygen, water, solids
Heat
According to the kinetic molecular theory, what happens to particles when energy is added?
Particles move faster and spread farther apart.
Which phase change releases heat: melting, evaporation, condensation, or sublimation?
Condensation
This type of matter can be physically separated
Mixture
What is the density of a substance with a mass of 30 g and a volume of 10 mL?
3 g/mL
The piece of equipment used to measure mass in the lab
Balance / scale
Which state of matter has particles that move the fastest?
Gas
The term for an increase in volume due to heating
Thermal expansion
Classify NaCl
Compound
Which is more dense: iron (7.87 g/cm³) or lead (11.34 g/cm³)
lead
Explain why air is considered matter
Air has mass and takes up space
Using kinetic molecular theory, explain what happens when matter is heated
Particles gain energy, move faster, and spread apart
Explain what happens during thermal contraction
Particles slow down, move closer together, and volume decreases
Name the type of mixture whose particles are large and settle over time
Suspension
A cube has sides of 4 cm and a mass of 176 g. Calculate its density.
2.75 g/cm³