States of Matter
What are the three main states of matter?
Liquid, solid and gas.
What do you call when a liquid turns into a gas?
Evaporation.
What is the boiling point of water?
100 degrees.
How do the molecules of ice behave?
They barely move. They are in a formation called a crystal lattice.
What is matter?
Anything that takes up space.
False. Liquids have no fixed shape, but have a fixed volume.
What do you call when a gas turns into a liquid?
Condensation.
What is the freezing point of water?
0 degrees.
How do water molecules behave?
They move past each other.
What is matter made of?
Atoms.
Name two properties of a solid.
Example: has a fixed shape, some can be poured, they have a fixed volume.
What is the opposite of evaporation?
Condensation.
What is the melting point of ice?
0 degrees.
How do water vapour molecules behave?
They move around radomnly.
What are molecules?
Groups of atoms.
Which states of matter take the shape of their container?
Liquids and gas.
What do you call when a liquid becomes a solid?
Freezing.
What do we use to measure temperature?
A thermometer.
What happens to ice molecules if we add energy to them?
They split and start moving. The ice turns into water.
What is the chemical structure of water?
H2O. Two atoms of hydrogen, one atom of oxygen.
Which states of matter have a surface?
Solids and Liquids.
What do you call when a solid becomes a liquid?
Melting.
When we add temperature, what are we adding to the molecules?
Energy.
What happens to water vapour molecules when we remove energy?
They move slower. The water vapour becomes water.
What is the chemical structure of Cardon Dioxide?
CO2. One carbon atom, two oxygen atoms.