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Match these items:
A) Salt / 1) a fire started without any help
B)sun / 2) most dangerous radiation
C)plasma phase / 3) rusting
D)reactants / 4) product of acid plus base
E)endothermic / 5)substances united in a reaction
F)hard water / 6) a reaction which takes in energy
G)gamma rays / 7)contains mineral salts
H)slow oxidation / 8) nuclei and free electrons
I)spontaneous combustion / 9)fueled by fusion

Respuesta :

The following is the correct list of matching:

1. A fire started without any help - Spontaneous combustion.

2. Most dangerous radiation - gamma rays.

3. Rusting - slow oxidation.

4. Product of acid and base - Salt.

5. Substances united in a reaction - reactants.

6. A reaction which takes in energy - Endothermic

7. Contains mineral salts - Hard water.

8. Nuclei and free electrons - Plasma phase.

9. Fueled by fusion - Sun.

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