Question

fill in the blanks....
1. addition of hydrogen ina subsatnce ina reaction is known as____.
2. In a _____ reaction two or more substances combine to form a new single substances.
3. unbalanced reactions are also known as _______.
4.reactions in which heat is given out along with the products are called _________ reactions.
5. reactions in which energy absorbed are known as ________ reactions .​

Answer 1

1. Reduction
2. Combination
3. Skeletal equation
4. Exothermic
5. Endothermic

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