Vocabulary
Anything that has mass and takes up space.
What is matter?
Matter exists in these three basic states on Earth.
What are solid, liquid, and gas?
The smallest chemical unit of matter.
What is an atom?
Two or more atoms linked together to make a substance with unique properties.
What is a molecule?
A substance that contains different compounds and/or elements that are not chemically combined.
What is a mixture?
The temperature at which a liquid turns into a gas.
What is the boiling point?
These positively charged particles are found in the nucleus of an atom.
What are protons?
A pure substance made of only one type of atom.
What is an element?
A pure substance made of two or more elements chemically combined in a fixed ratio.
What is a compound?
The two main factors that determine whether matter is a solid, liquid, or gas.
What are temperature and pressure?
These neutral particles are also found in the nucleus of an atom.
What are neutrons?
This occurs when a substance changes from a gas directly to a solid (or vice versa) without becoming a liquid.
What is deposition or sublimation?
A negatively charged ion formed when an atom gains electrons.
What is an anion?
In the kinetic theory of matter, particles in a gas have high amounts of this type of energy.
What is kinetic energy?
The region around the nucleus where electrons are likely to be found.
What is the electron cloud or energy levels?
This type of mixture has uniform composition throughout (like saltwater).
What is a homogeneous mixture or solution?