Particles recall questions

What is meant by the term “matter”

Anything that has a mass and takes up space

**What is a particle?**

A particle is a small portion of matter. For example an atom.

**State a property of a solid**

Any answer from the following:

• It cannot be compressed (squashed)

• It cannot change shape easily

• It cannot flow

• It has a fixed volume

**State a property of a liquid**

 

Any answer from the following:

• It cannot be compressed (squashed)

• It can change shape easily

• It can flow

• It has a fixed volume

**State a property of a gas**

Any answer from the following:

• It can be compressed (squashed) easily.

• It can easily change shape.

• It can flow.

• It will spread out in a container to fill all available space.

• It has a volume that can change

**State the 4 changes of state**

Melting, freezing, evaporating, condensing

**What is the definition of evaporation?**

Evaporation is the process when a liquid turns into a gas.

**What is the definition of condensing?**

Condensing is the process when a gas turns into a liquid

**What is the definition of diffusion?**

Diffusion is the movement of gas particles or particles in a solution from a high concentration to a lower concentration.

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10\. **What is the equation to calculate density?**

Density= mass / volume