Changes of State Flashcards
What type of change is when a substance changes state?
A physical change.
What happens when a solid is heated?
The particles gain energy.
What happens in a solid when the particles gain energy?
The particles vibrate more.
What happens in a solid when the particles vibrate more?
The forces that hold the solid together are weakened, and the solid expands.
What happens at a certain temperature in a solid?
The particles have enough energy to break free from their positions. This is called melting and the solid turns into a liquid.
What happens when a liquid is heated?
The particles gain energy.
What happens in a liquid when the particles gain energy?
The particles vibrate more.
What happens in a liquid when the particles vibrate more?
The bonds that hold the liquid together are weakened.
What happens at a certain temperature in a liquid?
The particles have enough energy to break their bonds. This is called evaporating and the liquid turns into a gas.
What is the name of the process where a solid turns into a liquid?
Melting
What is the name of the process where a liquid turns into a solid?
Freezing
What is the name of the process where a liquid turns into a gas?
Evaporating
What is the name of the process where a gas turns into a liquid?
Condensing
What is the name of the process where a solid turns into a gas?
Subliming
What are chemical changes?
When bonds between atoms break and the atoms change places.
