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 happens to water vapour molecules when we remove energy?
They move slower. The water vapour becomes water.
What is the melting point of ice?
0 degrees.
How do gas molecules behave?
Gas particles are always moving in straight lines in all directions until they collide with something.
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.
A substance has a definite volume but takes the shape of its container. Its particles are close together, but it is able to flow due to intermolecular forces that are strong but not rigid.
Liquids.
What do you call when a gas becomes a solid and vice versa
Sublimnation and deposition
When we add temperature, what are we adding to the molecules?
Kinetic Energy.
A substance has a high melting point, conducts electricity when molten, and forms a crystal lattice. Based on these properties, it is best classified as this type of solid.
Ionic Solid
Two substances have the same volume, but one has more mass. This means it has a greater value of this property, which depends on particle arrangement and spacing
Density.