Question

Fill in The Blanks
1. During a chemical reaction, the sum of the _________ of
the reactants and products remain unchanged.
2. Clusters of atoms that act as an ion are called __________
ions.
3. Mass of 1 mole of a substance is called its __________.
4. A chemical formula is also known as a ________.
5. Ionic compounds are formed by the combination between
________ an ______.​

Answer 1

Answer:

1. weight.

2. radical.

3. Molar mass.

4.

5. positive ion and negative ion.

Answer 2

Answer:

1)Formula mass of Na2O is 62 amu.

2)Formula for sulphur dioxide is SO3.

3)Number of molecules in 32 gram of oxygen is 6.02×1023.

4)Formula for sulphur dioxide is SO2.

5)Mass of 1 mole of a substance is called its formula mass.