Solids
What is the main characteristic of a solid?
It has a definite shape and volume
Do liquids have a definite shape?
No, they take the shape of their container
What is the main characteristic of a gas?
It has no definite shape or volume and expands to fill its container
What is it called when a solid turns into a liquid?
Melting
Which state of matter has the most tightly packed particles?
Solids
How are the particles in a solid arranged?
They are tightly packed and only vibrate in place
How do liquid particles move?
They slide past each other but stay close together
How do gas particles move?
They move fast and spread apart
What is it called when a liquid turns into a gas?
Evaporation
Which state of matter is made of particles that are far apart and move quickly?
Gases
What is an example of a solid that can change shape but is still a solid?
Clay, play dough, or rubber
What happens to liquid when it is poured from one container to another?
It changes shape but keeps the same volume
What happens when gas is compressed into a smaller space, like a balloon?
It increases the pressure
What happens when a gas cools down and turns into a liquid?
Condensation
Which state of matter takes the shape of its container but does not expand to fill it?
Liquids
What happens to most solids when they are heated?
They expand or melt
Why do some liquids, like honey, pour more slowly than water?
Because of high viscosity
What is an example of an invisible gas that we need to live?
Oxygen
What is the process of a liquid becoming a solid?
Freezing
What happens to most substances when they get colder?
They contract and their particles move slower
Some solids can return to their original shape after being bent or stretched. What is this property called?
Elasticity
What happens to most liquids when they are heated?
They expand and may evaporate into gas
What happens to gas particles when they are heated?
They move faster and spread out
What happens to the particles of a substance when it melts?
They move faster and spread apart as the solid turns into a liquid
What property allows some liquids, like water, to stick to surfaces like glass?
Adhesion