Physical Science Review

2. Newton's law that says the larger the mass the harder it is to change speed and direction.
5. Newton's law that says an object in motion stays in motion.
7. Energy that is created by splitting apart atoms.
10. Energy from heat.
12. Part of the atom with no charge.
13. Energy of motion
14. Newton's law that says for every action there is an equal and opposite reaction.
15. A group of different types of atoms or compounds put in the same place but not chemically combined.
16. A group of different types of atoms chemically combined.
18. A group of atoms that are all one single type of atom.
20. The center of an atom.

1. Energy that travels in waves like light and sound.
3. An assumption or guess about what is happening in a certain situation.
4. Energy that is stored or has the potential to be used.
6. Part of the atom that is positively charged.
8. An assumption or guess about what is going to happen in the future.
9. Energy from moving electrons.
11. Part of the atom that is negatively charged.
17. An obvious statement describing an object or event that everyone can agree with.
19. Energy that is created during a chemical reaction.