Question

1. Fill in the blanks with the correct words from the brackets.
1. A chemical reaction in which heat is given out is called an
reaction
(endothermic/exothermic)
2. A
reaction is a reaction in which a decomposition reaction takes place in the
presence of sunlight. (ultraviolet/photochemical)
erties 3. Burning of magnesium wire is example of
reaction.
(combination/decomposition)
4. Oxidising agent is a substance which gives
(hydrogen/oxygen)
5.
__________react with oxygen to form acidic compounds of oxides. (Metals/Non-metals)​

Answer 1

Answer:

1) endothermic

2) ultraviolet

3) combination

4) hydrogen

5) metals

Answer 2

Answer:

1. exothermic reaction

2. photochemical

3. combination

4. oxygen

5. metals

Hope it'll help

Explanation:

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