Answer:
✓ Reactants
✓Reactants
✓ product
Explanation:
The substance(s) to the left of the arrow in a chemical equation are called ..................
A ............... is a substance that is present at the start of a chemical reaction.
A ................. is a substance that is present at the end of a chemical reaction.
Reactants are substances that undergo chemical reaction and are present at the beginning of the reaction and are consumed during the process of the reaction to form a product.
2H2 + O2 ------>2H2O
Here H2 and O2 are Reactants while water H2O is the product ( water)
Products are species that are produced after the chemical reaction have taken place.