2 Balancing Chemical Equations Exam Questions
and Correct Answers
1. ammonia correct answer: a chemical used in cleaning products; made up of one nitrogen atom
and three hydrogen atoms
2. balance correct answer: the state of being in equal amounts
For a chemical equation to be balanced the number of an atom needs to be the same on both sides
3. law of conservation of mass correct answer: natural law that states the same amount
of mass is present before and after a chemical reaction
4. system correct answer: a group of related objects that interact and form a complex whole
5. chemical equation correct answer: a shorthand that uses chemical symbols and molecular
formulas to show what occurs during a chemical reaction
6. coefficient correct answer: a number that indicates how many times to multiply a variable
7. law of conservation of mass correct answer: a natural law stating that the same
amount of mass is present before and after a chemical reaction
8. products correct answer: the chemicals present after a chemical reaction occurs
9. reactants correct answer: the chemicals present before a chemical reaction occurs
10. subscript correct answer: a letter, number, or symbol that is smaller and just below the
normal line of type
11. What does it mean for a chemical equation to be balanced?
correct answer: The number of each type of atom is the same for both the reactants
and products.
12. Steps for Balancing Equations correct answer: correct answer: -Identify the
elements on each side
-Counts the atoms of each element on each side
13. Equation correct answer: KCIO3 correct answer: Reactants correct
answer:
K1
CI 1
O3
Products correct answer:
K1
1/
4
and Correct Answers
1. ammonia correct answer: a chemical used in cleaning products; made up of one nitrogen atom
and three hydrogen atoms
2. balance correct answer: the state of being in equal amounts
For a chemical equation to be balanced the number of an atom needs to be the same on both sides
3. law of conservation of mass correct answer: natural law that states the same amount
of mass is present before and after a chemical reaction
4. system correct answer: a group of related objects that interact and form a complex whole
5. chemical equation correct answer: a shorthand that uses chemical symbols and molecular
formulas to show what occurs during a chemical reaction
6. coefficient correct answer: a number that indicates how many times to multiply a variable
7. law of conservation of mass correct answer: a natural law stating that the same
amount of mass is present before and after a chemical reaction
8. products correct answer: the chemicals present after a chemical reaction occurs
9. reactants correct answer: the chemicals present before a chemical reaction occurs
10. subscript correct answer: a letter, number, or symbol that is smaller and just below the
normal line of type
11. What does it mean for a chemical equation to be balanced?
correct answer: The number of each type of atom is the same for both the reactants
and products.
12. Steps for Balancing Equations correct answer: correct answer: -Identify the
elements on each side
-Counts the atoms of each element on each side
13. Equation correct answer: KCIO3 correct answer: Reactants correct
answer:
K1
CI 1
O3
Products correct answer:
K1
1/
4
