Question

III. Fill in the blanks
1. Symols for tin and lead are
and
respectively. (Ti/Sn, Le/Pb)
2. Every chemical equation must satisfy the law of
(conservation of mass/conservation of energy)
3. In a balanced equation, the number of atoms is the same on
of the equation.
(left side/both sides)
4. Water contains
atoms of hydrogen. (two/three)
5. The substances that are formed after a chemical change are called
(reactants/products)​

Answer 1

Answer:

1. Ti, Le.

2. Conservation of mass.

3. Both sides.

4. Two.

5. Product.

Explanation:

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Answer 2

Answer:

1. Sn and Pb

2. Conservation of mass

3. both sides

4. two

5. products.

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