Home › BECE (Ghana) › Science › Chemical Reactions › What do we call the substances that are present …
What do we call the substances that are present before a reaction takes place?
AThe products
BThe residues
CThe solvents
DThe reactants
Answer & Solution
Correct answer: D. The reactants
1. A chemical equation is written with an arrow pointing from left to right.
2. The substances written before the arrow are there at the start.
3. Those starting substances are called the reactants.
4. The substances made by the reaction are called the products.
_Source: Siyavula Natural Sciences Grade 8 (CC BY 4.0), Reactants and products_
Related questions
Clear limewater turns milky white when a gas is bubbled through it. Which gas was in the bMilk left standing for a few days tastes sour. Which process has produced that taste?During a chemical reaction, what happens to the atoms of the reactants?What happens to the starting substances during a chemical reaction?During photosynthesis, plants use sunlight to convert CO₂ and water into glucose. This shoIn the decomposition Pb(NO₃)₂ → PbO + 4NO₂ + O₂, the equation as written is:Why does the colour of CuSO₄ solution fade when iron filings are added?Which sequence correctly lists three indicators of a chemical change that occur together i