Question

Please help I will give 20 points

Answer 1

1.combined

2.bonds

3.retain

elements

hydrogen gas,oxygen gas

extinguish

sodium and chlorine

violently

Step-by-step explanation:

same with 7

Answer 2

Step-by-step explanation:

1.combined

2.bonds

3.retain

4.elements

hydrogen gas,oxygen gas

extinguish

5.sodium and chlorine

6.violently

7.Don't know for sure

I'm certain most but not all