WorksheetsModule 4
Total questions: 6
Worksheet time: 5mins
Which of the following happens during a chemical reaction?
The total mass of the reactants is less than the total mass of the products.
Atoms of reactants rearrange to form new substances.
Atoms of reactants are destroyed.
New atoms are created to form the products.
Which of the following statements is true for a synthesis reaction?
Multiple products are formed.
Multiple reactants break down.
A single product is formed.
A single reactant breaks down.
Two chemical reaction are shown:
C + O2 → CO2
CO2 + H2O → H2CO3
Which statement is true?
Both are decomposition reactions.
A is a decomposition reaction, and B is a synthesis reaction.
Both are synthesis reactions.
A is a synthesis reaction, and B is a decomposition reaction.
Which of the following steps can be used to identify an acid-base reaction?
Check if the ions of two compounds exchange places.
Check whether the reactants are an acid and a base.
Check if one element replaces another element in a compound.
Check whether the products are an acid and a base
Which of the following is true for an element that is oxidized during a redox reaction?
It gains protons.
It loses electrons.
It loses protons.
It gains electrons.
Which of the following is true for a nuclear reaction?
Electrons are gained.
The identity of element changes.
The identity of element remains same.
Electrons are lost.
