WorksheetsChemical Equations
Total questions: 17
Worksheet time: 9mins
What is the left part of a chemical equation called?
2H2 + O2 ---> 2H2O
Reactants
Yields
Products
Chemical equation
What is the right part of a chemical equation called?
2H2 + O2 ---> 2H2O
Reactants
Yields
Products
Chemical Equation
How many Mn atoms are found in the following compound?
2MnO4
1
2
4
8
What is the little number after an element in a chemical equation called?
Example: H2
Coefficient
Atom
Subscript
Equation
Is the following equation balanced?
Al + O2 ---> 2Al2O3
YES
NO
What is the number before a chemical formula called?
Example: 2H2 + O2 ---> 2H2O
Coefficient
Atom
Subscript
Equation
Which of the following equations are correctly balanced?
12CO2 + H2O ---> C6H12O6 + O2
CO2 + H2O ---> 3C6H12O6 + O2
CO2 + 9H2O ---> C6H12O6 + O2
6CO2 + 6H2O ---> C6H12O6 + 6O2
Balance this equation:
H2 + Cl2 ---> HCl
It is balanced.
H2 + Cl2 ---> 2HCl
3H2 + Cl2 ---> 6HCl
H2 + 3Cl2 ---> 6HCl
Complete the sentence.
During a chemical reaction, atoms ________.
can appear
can disappear
get rearranged
stop moving and vibrating
What is the Law of Conservation of Mass?
It states that matter cannot be created or destroyed.
It states that energy cannot be created or destroyed.
It states that matter can be created or destroyed.
It states that sound can be created or destroyed.
What are the numbers that you CANNOT change in a chemical equation?
Subscripts
What is the right ratio of chemicals for the balanced chemical equation?
__Ca + __H2O --> __Ca(OH)2 + __H2
What is the right ratio of chemicals for the balanced chemical equation?
__CO + __Fe2O3--> __Fe + __CO2
What is the right ratio of chemicals for the balanced chemical equation?
__H2 + __S --> __H2S
What is the right ratio of chemicals for the balanced chemical equation?
__H2SO3 + __KOH--> __H2O+ __K2SO3
