Chemistry

4. Mass number = number of ________
5. Bond between two metals
7. Decay where a neutron changes to a proton and electron
8. Material made of only one substance
10. Location of most mass of an atom
12. Reaction type where new substance is formed
13. Type of covalent bond where sharing isn't equal
15. Using mass or moles of one substance to find mass or moles of another substance
16. Reaction type where substance doesn't change
17. 6.022 x 10^23, unit of measure of molecules in a substance
18. Bond where metal takes electrons from nonmetal

1. Bond where two nonmetals share electrons
2. Decay where only energy is released
3. Material made of two or more substances
6. The _____ of all substances in a reaction must be equal
9. All flammable objects catch fire
10. Number of protons = atomic ________
11. Reaction where a hydrocarbon and oxygen combine to make water and carbon dioxide
14. Decay where a helium nucleus is produced
16. Row on the periodic table