A substance can change state in many ways. When a liquid becomes gas, it is called __________.
evaporation
The volume of a liquid is measured in __________ or __________.
litres (l) or millilitres (ml).
A substance can change state in many ways. When a gas becomes a liquid, it is called __________.
condensation
In a __________ mixture you cannot see or separate the different substances, everything looks the same.
homogenous
A substance can change state in many ways. When a substance combines with oxygen, it is called __________.
oxidation
The volume of a solid is measured in __________ or __________.
cubic metres (m³) or cubic centimetres (cm³).
In a __________ mixture, you can see the different substances in it.
heterogenous
The mass of an object is measured in __________ and __________.
grams (g) and kilograms (kg).
Combustion and oxidation are __________ changes. They cannot be reversed and the substance changes.
chemical
What are four specific properties of matter?
Colour, hardness, transparency and taste.
A substance can change state in many ways. When a liquid becomes a solid, it is called __________.
solidification
Melting, evaporation, condensation and solidification are __________ changes. They can be reversed and the substance stays the same.
physical
What are the three states of matter?
Solid, liquid and gas.
A substance can change state in many ways. When a substance burns, it is called __________.
combustion
When the metal parts of a bicycle become covered in rust, it is a __________ change.
chemical
When we combine two or more substances, we make a __________.
mixture
Matter is everything around us that takes up __________.
space
The __________ of an object is the amount of space it occupies.
volume
The mass of an object is the amount of __________ in it.
matter
If an object has a lower density than water, it __________.
floats
What are the two general properties of matter?
Mass and volume.
Density measures how much __________ is concentrated in an object.
mass
If an object has a __________ density than water, it sinks.
higher
A substance can change state in many ways. When a solid becomes a liquid, it is __________.
melting