Question

1. a fire started without any help endothermic 2. most dangerous radiation salt 3. rusting reactants 4. product of acid plus base hard water 5. substances united in a reaction plasma phase 6. a reaction which takes in energy slow oxidation 7. contains mineral salts sun 8. nuclei and free electrons spontaneous combustion 9. fueled by fusion gamma rays

Answer 1

4-salt

2-gamma rays

8-plasma phase

3-slow oxidation

6-endothermic

7-hard water

9-sun

5-reactants

1-spontaneous combustion

Answer 2

The correct matching of items have been properly done below

Step-by-step explanation:

fire started without any help-sponteanous combustion

most dangerous radiation----- gamma rays

rusting -slow oxidation

product of acid plus base- salt

substances united in a reaction - reactants

. a reaction which takes in energy- endothermic

contains mineral salts - hard water

nuclei and free electrons- plasma phase

fueled by fusion- sun