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16 terms

Unit 5 Lesson 2

STUDY
PLAY
SOLID
A form of matter that has a set shape; its shape stays the same. It also has a set volume. It takes up the same amount of space all the time. Wood, iron, rocks, and most metals are examples.
LIQUID
This has a set volume but no set shape; it takes the shape of its container. Water is an example.
GASES
These have no set shape or volume. It expands to fill its container. Hydrogen is an examples.
BOILING POINT
The temperature at which a type of matter changes from a liquid to a gas. For water it is 100 degrees Celsius.
MELTING POINT
The temperature at which a type of matter changes from a solid to a liquid. For ice it is 0 degrees Celsius
FREEZING POINT
The temperature at which a liquid changes to a solid. For water it is 0 degrees Celsius
CELSIUS
On this temeparature scale ice melts at 0 degrees and water boils at 100 degrees.
CHEMICAL CHANGE
Matter changes in appearance, and the atoms of the matter change, for example, iron turns to rust
PHYSICAL CHANGE
Matter changes in appearance but its atoms do not change. Examples include water boiling, or using wood to make a chair.
STATES OF MATTER
Solid, liquid, gas
ELECTRON
Negatively charged part of an atom that orbits the nucleus
PROTON
Positively charged particle in the nucleus of an atom
NEUTRON
Particle in the nucleus of an atom. This particle has no charge.
PERIODIC TABLE
ATOM
a small particle which makes up all matter. It contains one or more protons and neutrons in its nucleus, and electrons around the nucleus
ELEMENT
a substance made of only one type of atom.

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