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