Chem Vocab

2. Elemet An element that needs 2 of the same molecules to make an atom
3. Replacement Reaction where one element replaces another in a compound and they switch.
5. Number placed in front of a chemical formula. (it can help balance a chemical equation)
9. Replacement Reaction where parts of two compounds swap places to form two new compounds.
11. Combination) Type of reaction where two or more substances combine to form one product
12. The Substance on the right side of an equation that was formed from a chemical reaction

1. A Substance made of two or more elements chemically bonded together.
2. Reaction where a compound breaks down into two or more simpler substances
4. The Substance on the left side of an equation that will form into something new
5. A bond formed when two atoms share electrons.
6. A postive or negatively charged atom formed when an atom gains or loses electrons.
7. Reaction involving oxygen that produces heat and light, it also forms water and carbon dioxide.
8. Small number written below a chemical symbol
10. A bond when an electron is tranffered from one atom to another