Matter
What is matter
A solid becomes a liquid
Melting process
what is a force
what is a push or pull
what is energy
the ability to do work
What is an atom
the smallest building block of matter
what is dark matter?
what is unseen matter whose gravity holds the universe together
When liquid cools, the particles slow down until their attraction locks them in a fixed state
what is freezing
Two types of forces
contact and field forces
What is work
a force that acts on an object as it moves through a distance
What can be in an atom
Electrons, protons, and neutrons
Name all 3 states of matter
what is solid, liquid, and gases
Liquid to gas
When objects touch each other
contact force
A moving object has _____energy
kinetic
What is an element, what is a compound
elements are single pure substances, compounds are pure substances made up of two or more elements
Pure substance is made of one kind of particle, mixtures are two or more
Vaporization can occur with many solids, ______ occurs when a solid substance turns into a vapor without becoming liquid first
sublimation, aka dew drops on grass
Objects separated by distance, they can attract or repel
field forces
An object has this kind of energy when a force acting on it gives it the ____ to move.
Potential
What is a crystalline
lots of particles joined in a repeating pattern
What is the 4th state of matter
Plasma; aka. The Sun
Vapor on cool surfaces can turn solid without being liquid first this is called what
deposition, aka frost
Name 3 types of field forces
magnetic, electric, and gravity
Name 3 of the 7 sources of energy
Thermal, sound, electrical, magnetic, chemical, light, or nuclear
Name all 3 types of changes in matter
Physical, chemical, and nuclear changes