Question

1. During a chemical reaction, the sum of the _________ of the reactants and products remain unchanged.
2. In a pure chemical compound, elements are always present in a ________ proportion by mass.
3. Clusters of atoms that act as an ion are called __________ ions.
4. Those ions which are formed from single atoms are called _________.
5. Ionic compounds are formed by the combination between ________ an ______.
6. The valency of an ion is _________ to the charge on the ion.
7. The SI unit of amount of a substance is __________.

Answer 1

Here we go,

1. Atoms

2. Definite

3. Polyatomic

4. Monatomic

5. Metals and non metals

6. Equal

7. Mole

I hope my answer will help you.

Answer 2

Answer:

HERE ARE YOUR ANSWER.....PLZ GO THROUGH IT DEAR......

Explanation:

1. Atoms

2. Definite

3. Polyatomic

4. Monatomic

5. Metals and non metals

6. Equal

7. Mole...

HOPE IT HELPED U.............HAVE A GOOD DAY....MARK BRAINLIEST PLZ