an example of a gas
teachers choice
how can we seperate sand and water?
using a filter/sieve
atoms are extremely small and are made up of a few even smaller particles, known as __________
sub-atomic particles
When any two or more atoms join together (of the same or different elements), a _______ is formed.
molecule
what is a mixture?
A mixture is when two or more substances have been combined
an example of a heterogenous mixture:
teachers choice
what happens when you cool down water?
it freezes
Properties of the three states of matter are:
solids, liquids and gases
what happens when you mix sand with water and let it stand?
the sand settles to the bottom
an example of a homogenous mixture
teachers choice
The ________ is the basic building block for all matter in the universe.
atom