Question

B. Fill in the blanks.
1. In a chemical reaction between chemicals in aqueous form, if an insoluble product is
formed and settles down, it is called a
2. If heat is absorbed during a chemical reaction, it is called an.
reaction.
3. When a substance X is heated, it breaks up into two substances. Such a reaction is
called a
reaction.
4. If in a chemical reaction, two substances exchange their radicals, it is said to be a
reaction.
- is a chemical reaction that involves the addition of oxygen or
the removal of hydrogen from a substance.
6. When iron is left exposed to moist air, it chemically reacts with oxygen and water in the
air to form​

Answer 1

Answer:

1. precipitate
2. endothermic
3. decomposition reaction
4. double displacement reaction
5. oxidation reaction
6. ferrous oxide