terms
can be described as the world we live in, that is made up of matter
physical world
energy is the ability to do ____________
work
matter that can keep its shape
solid
what is the physical substance that has weight, takes up space, and makes up everything we have
matter
how do we know something has matter?
it takes up space
matter cannot keep its shape , but can fill the shape of a container
liquid
a tiny particle (piece) of matter
molecule
what are the 3 states of matter
solid,liquid,gas
matter that can fill a space, but the particles escape quickly
gas
a particle (piece) that makes up a molecule
atom
when particles are packed tightly together they are ____
dense
matter molecules are somewhat loosely connected but not the least dense
liquid
another name for heat energy
thermal energy
volume is the amount of _____________
space something takes up
the least dense (packed together) than any other state of matter
gas