Matter
What you should know.
- The properties of solids
and liquids.
- Solids and liquids expand
when heated.
- Solids and liquids
contract when cooled.
- When a solid melts it
becomes a liquid.
- The temperature at which
a solids changes to a liquid is called the 'melting point'.
- The melting point and the
freezing point are the same temperature for the same substance.
- The properties of gases.
- The names of 5 common
gases.
- The air is about 21%
oxygen, 78% nitrogen with small amounts of other gases.
- Oxygen is needed for
animas to live.
- Oxygen relights a glowing
splint
- The 3 states of matter
are solid, liquid and gas.
- Solids and liquids are
harder to compress than gases.
- Everything is made of
very small particles.
- The temperature at which
a liquid changes to a gas is called the 'boiling point'.
- Diffusion is when
particles move and mix of their own accord.
- Particles vibrate in
solids, move about in liquids and move faster in gases.
- Gases diffuse faster than
solids and liquids.
- A solid is said to
'dissolve' if it disappears in a liquid'.
- The liquid produced when
a solid dissolves is called a solution.
- Solids which dissolve are
called soluble.
- Solids which do not
dissolve are called insoluble.
What you should be able to do.
- Observe differences in
the ways that solids and liquids behave.
- Classify substances as
solid or liquids.
- Use data tables to find
melting point values.
- Make predictions about
substances from their melting points.
- Collect a gas over water.
- Make a summary
table to show the differences between solids, liquids and gases.
- Test for oxygen gas.
- Use an electric balance.
- Draw diagrams to show the
arrangement of particles in solids, liquids and gases.
- Use particle diagrams to
explain about compressing solids, liquids and gases.
- Test solids to if are
soluble in water.
- Plan an investigation
about dissolving.
|