Fill in the blanks:-
1. Addition of hydrogen in a substance in a reaction is known as___________ reaction.
2. In a ________ reaction two or more substances combine to form a new single substance.
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 is absorbed are known as _________ reactions.
6. When as element displaces another element from its compound, a ________ reaction occurs.
7. Those reactions, in which two compounds react by an exchange of ions to form two new compounds, are called ________ reactions
8. Precipitation reactions produce __________ salts.
9. Reduction is the _________ of oxygen or gain of hydrogen.
10. The digestion of food in the body is an example of ____________ reaction.
11. The addition of oxygen to a substance is called __________.
12. When calcium carbonate is heated, it decomposes to give___________ and
Answers
Explanation:
1. Addition of hydrogen in a substance in a reaction is known as reaction.
2. In a reaction two or more substances combine to form a new single substance.
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 is absorbed are known as reactions.
6. When as element displaces another element from its compound, a reaction occurs.
7. Those reactions, in which two compounds react by an exchange of ions to form two new compounds, are called reactions
8. Precipitation reactions produce salts.
9. Reduction is theof oxygen or gain of hydrogen.
10. The digestion of food in the body is an example of reaction.
11. The addition of oxygen to a substance is called
12. When calcium carbonate is heated, it decomposes to give and
1. reduction
2. Combination
3. skeletal
4. Exothermic
5. Endothermic
6. Displacement
7. Double displacement
8. Insoluble
9. Loss
10. Decomposition reaction
11. Oxidation
12. CaO(s) and CO2 (g)