States of Matter Vocabulary Review

2. Solid to gas is called ___________.
4. Another term for state is ____________.
5. The basic "building block" of all matter
7. The number of ____________ is the same as the number of protons.
8. When particles in a solid or liquid move faster they move slightly further apart. This is called ____________.
9. Liquid to solid is called______________.
11. The small numbers in a chemical formula, the ____________, tell us how many of each atom are present in a molecule.
15. When particles move slower they come closer together. This is called ______________.
19. Gas to liquid is called ___________.
20. Anything that has mass and takes up space.
21. To cause a phase change, you must ________ or remove thermal energy.
22. The atomic mass- atomic number tells you the number of _____________ an atom has.
23. Particles that a tightly packed but can move past each other are in the __________ state.
24. The study of matter and how it changes.

1. The large number at the front of a chemical formula, the ___________, tells us how many molecules are present.
3. Liquid to gas is called ___________.
6. A _______________ is like a recipe for a molecule.
10. A visual representation of an atom is called a _______ model.
11. How tightly packed particles of matter are determines what ____________ it is.
12. The kinetic theory of matter tells us that particles are in ___________ motion.
13. Two or more atoms chemically bonded together
14. Particles that move freely and have barely any attraction to each other are in the ________ state.
16. The atomic number of an element determines how many _________ there are in the atom.
17. Particles that are tightly packed and only vibrate are in the __________ state.
18. The amount of matter an object is made up of.
25. Solid to liquid is called ______________.