All things that take up space.
What is matter?
1,000 milliliters=1liter
Define volume
the amount of space a substance occupies
what is H20?
a molecule
Name two signs that a physical change has happened
change in shape or change in state
Can matter be created or destroyed?
No, it can only change form.
Particles of matter are so small that scientists must use special types of
What are microscopes?
how is mass measured?
small masses-grams (g)
larger masses-kilograms (kg)
1,000 gram= 1 kilogram
expression for density
p=m/v
Particles are constantly
Moving
Scientist use these tools to measure the volume of liquid
What is measuring cylinders?
give an example of a chemical change
burned log
Gas will expand or spread apart, to fill its container.
A gas can also be squeezed, or compressed, into smaller containers.
what is the fourth state of matter?
plasma
is melting a physical or chemical change?
physical