Conservation in Chemical Reactions Quick Check
Science 8 Q1 / Matter Interactions
In which chemical equation is the number of atoms in the reactants the same as the number of atoms in the products?(1 point)
Responses
A. Zn + 2HCl → H2 + ZnCl2
Zn + 2HCl → H 2 + ZnCl 2
B. CH4 + O2 → CO2 + 2H2O
CH 4 + O 2 → CO 2 + 2H 2 O
C. Li2CO3 → LiO + CO2
Li 2 CO 3 → LiO + CO 2
D. CO2 + H2O → CH2OH + O2
B. CH4 + O2 → CO2 + 2H2O
In this chemical equation, the number of atoms in the reactants (5 carbon atoms and 4 oxygen atoms) is the same as the number of atoms in the products (1 carbon atom and 4 oxygen atoms).
The chemical equation in which the number of atoms in the reactants is the same as the number of atoms in the products is:
B. CH4 + O2 → CO2 + 2H2O