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Name the 3 states of matter.
Solids, liquids and gases
Everything is made up of what small type of particle?
Atoms
When atoms join together, what do they form?
Molecules (or compounds)
State one thing that gases can do that solids and liquids cannot.
They can be compressed.
Describe what diffusion is.
When particles moves from a high concentration to a low concentration.
Describe the arrangement of atoms in a solid.
All atoms are close together in a fixed shape
Describe the arrangement of atoms in a liquid.
Atoms are close together with no fixed shape and can flow over one another.
Describe the arrangement of atoms in a gas.
Atoms have a lot of space between them and are far apart.
Why can I not use a Bunsen burner to boil ethanol?
Because it is a flammable liquid.
What is the melting point of a substance?
The temperature at which a solid changes to a liquid.
What is the boiling point of a substance?
The temperature at which a liquid changes to a gas.
What is condensation?
When a gas changes into a liquid.
What is evaporation?
When the surface of a liquid changes into a gas.
Describe what happens when something freezes.
It turns from a liquid into a gas / the particles come closer together and make a fixed shape.
True or false: the melting point of water is 100 degrees C.
False
What does this symbol mean?
Flammable
