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Matter and materials
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What is matter?
Everything around us. Everything that has mass and volume.
What is mass?
The amount of matter that an object has.
What instrument do we use to measure mass?
We use a scale.
What unit is used to measure mass?
Grams, Kilograms, etc.
What is volume?
The amount of space that an object occupies.
What instrument do we use to measure the volume of an object?
We use a graduetaed scale.
What unit is used to measure the volume of an object?
Millilitres, Litres, etc
What is the boiling point of water?
100ºC
What is the freezing point of water?
0ªC
Is it true that a solid has a definite shape and a definite volume?
True
Is it true that a liquid has a definite shape and a definite volume?
False
The process in which a liquid turns into a gas is called...
Evaporation
The process in which a gas turns into a liquid is called...
Condensation
The process in which a solid turns into a liquid is called...
Melting
Matter with only one kind of atoms is called...
Pure substance
When two or more atoms join together, they form a...
Molecule
Density
the amount of matter in a specific space.
The name of the two kinds of mixtures
Homogeneous and heterogeneous mixtures
Which method would you use to separate the juice from the pulp in an orange juice?
Filtration
Which method would you use to separate a solid from a liquid?
Filtration, evaporation...
Which method would you use to separate two liquids with a different boiling point?
Distillation
Which method would you use to separate two liquids with different densities?
Decantation
Melting. Physical or chemical change?
Physical change
Evaporation. Physical or chemical change?
Physical change
Oxidation. Physical or chemical change?
Chemical change
Combustion. Physical or chemical change?
Chemical change
Which method would you use to separate a mixture in which there is an element made of metal?
Magnetic separation
True or false: Oil has more density than water.
False
Sea water. Homogeneous or heterogeneous mixture?
Homogeneous mixture
True or false: A helium balloon has more density than the air surrounding it.
False