States Of Matter Flashcards
Matter
Anything that occupies space and has mass
Mass
Is the amount of matter in an object.
3 states of matter
Solids liquids and gases
Properties of solids
It has a definite shape
Solids have a definite volume
Solids cannot be compressed
Solids cannot flow
Properties of liquids
Liquids have no definite shape
Liquids have a definite volume
Liquids cannot be compressed
Liquids can flow
Gases
Do not have a definite shape
Do not have a definite volume
Can be compressed
Can flow
Heat energy
In order for a substance to change state (from a solid to a liquid, or liquid to gas) it needs heat energy.
As a substance changes state, it uses latent heat, there is no change in temperature but the state of material changes.
The melting point
Is when both the solid and liquid state exist together.
Condensation
Is the changing of a gas to a liquid
Diffusion
If you spray perfume, it spreads
Plasma
Plasma is the fourth state of matter, like gas,
but can conduct electricity.
Physical change
Physical change: no change in particles, just
the particle arrangement and energy, easy to
reverse e.g. mixing water and salt
Chemical change
A chemical reaction takes
place and a new substance is formed, very
difficult to reverse e.g. burning a match
During a chemical reaction
the atoms
rearrange to form a new substance. Might be
seen by colour change, temperature
change, light being emitted or bubbles.
Law of conservation of mass
Matter can be changed from one form to
another. During physical and chemical
changes, there is no overall change in mass
