States of Matter
What is matter?
Matter is anything that has mass (weight) and takes up space.
When a liquid becomes a solid, that is called ___________.
Freezing
What is a physical property?
A physical property is any property that is evident without a chemical reaction
The smallest unit of matter is called _______
Atoms
When a solid becomes a liquid, that is called _________.
Melting
What is magnetism?
The force that attracts or repels an object made of a magnetic material.
Solid, liquid, gas
When a liquid becomes a gas, that is called ____________.
Evaporation
What is opacity?
How much light is able to pass through an object (eg. how see-through it is)
What state of matter has widely spaced atoms?
Gas (it is so widely spaced that it will not even respond to gravity)
When a gas becomes a liquid, it is called ___________.
Condensation
What are the three stages of opacity?
Transparent (glass)
Translucent (frosted glass)
Opaque (a metal door)
What states of matter has atoms that can flow?
Liquid (and gas)
When a gas becomes a solid, it is called ___________. (eg. frost)
Deposition
What is the difference between a chemical change and a physical change?
A chemical change is any change that results in the formation of a new substance.
A physical change is a reversible change in the physical properties of a substance.
(Hint) Physical changes are reversible