C1.1 The Particle Flashcards
1
Q
What is a particle?
A
A tiny bit of matter
2
Q
State key facts about the particle arrangement of a solid
A
- Particles are in a regular arrangement
- The distance between the particles are very close
- Particles vibrate in fixed positions
3
Q
State key facts about the particle arrangement of a liquid
A
- Particles in a random arrangement
- They have a close arrangement
- Move around each other
4
Q
State key facts about the particle arrangement of a gas
A
- Random arrangement
- Far apart
- move quickly in all directions
5
Q
What is a chemical change?
A
A change that produces one or more new substances
cannot be reversed
6
Q
What is a physical change?
A
A physical change happens when a substance changes state or shape or breaks into pieces
No new substance is made
can be reversed
7
Q
What is an atom
A
The smallest particle that make up a substance
8
Q
What are the limitations of the particle model
A
The particle model does not take Ito account the following:
- The forces between them
- The size of particles
- The space between the particles
- It is 3D
