WorksheetsIntro to Chemical equations
Total questions: 10
Worksheet time: 9mins
What is the Law of Conservation of Mass?
It states that no matter can be created or destroyed.
It states that matter can be created or destroyed.
It sates that no energy can be created or destroyed.
It state that no sound can be created or destroyed.
What is a coefficient?
The small number on the right of the chemical symbol.
The large number in front of a chemical formula.
The number in between the chemical symbols.
The number behind a chemical formula.
What is the part of the chemical equation in red called? Fe + S --> FeS
products
yield
reactants
chemical formula
What is the little number after an element in a chemical equation called? Example O2
coefficient
atom
subscript
equation
Which problem is balanced? (Check ALL that apply.)
PbO2 + 2H2
2Na +2H2O --> 2NaOH + H2
SO2 + H2O --> H2SO4
How many elements are in C6H12O6?
1
3
2
4
Element or compound? H2O
element
compound
Is this balanced? Al + O2 --> 2Al2O3
yes
no
Choose the compound with the polyatomic ion as part of the formula.
H2S
H2SO4
H2O
SO2
Choose the compound with a polyatomic ion as part of the formula.
Calcium oxide
Calcium chloride
Calcium carbonate
