Chemistry

2. A substance that is dissolved in a solution
5. The process by which a gas turns into a liquid
6. The simplest form of matter that retains its properties
8. A positively charged subatomic particle
9. NUMBER The number of protons in the nucleus of an atom
11. The ability of an atom to attract electrons to itself in a chemical bond
13. The total number of protons and neutrons in an atom
16. A type of chemical reaction that releases energy
17. A substance that speeds up a chemical reaction

1. A substance that cannot be broken down into simpler substances by chemical means
3. The process by which a liquid turns into a gas
4. The smallest unit of an element
5. A type of chemical bond formed when atoms share electrons
7. A type of chemical reaction that requires energy
8. The measure of how acidic or basic a substance is
10. A type of chemical bond formed when atoms transfer electrons
12. A negatively charged subatomic particle
14. A type of mixture in which the particles are evenly distributed
15. The center of an atom, containing protons and neutrons