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WorksheetsChemical Equations
Total questions: 30
Worksheet time: 18mins
What is a chemical equation?
Describes the number of elements in a compound.
One or two letters that represent the elements on the periodic table.
The number to the lower right of an element that shows the number of atoms bonded.
A written description of a chemical reaction.
______ is the end result of a chemical reaction. (Right Side)
Product
Deleting atoms and matter
Subscript
Reactant
One or two letters that represent the elements on the periodic table is called _______?
For example, Ca.
Subscript
The Chemical Equation
The Chemical Symbol
Coefficient
The SMALLER number to the lower right of an element that shows the number of atoms bonded is called ? For example, H2
Product
Subscript
Chemical Formula
Reactant
What does the Law of Conservation of Matter state?
Matter cannot be created or destroyed in a chemical reaction, it just changes into something new/changes form.
Matter can only be lost in a chemical reaction.
Matter can only be gained in a chemical reaction.
Matter can be gained and lost in a chemical reaction.
2H2 + O2 --> 2H2O
2H2 + O2 --> 2H2O
How many elements are in C6H12O6?
1
6
3
24
What is the big number before a chemical formula called?
Ex: 2H2 + O2 --> 2H2O
Coefficient
Subscript
Atom
Equation
Identify the Reactants in this equation.
A
B
Identify the number in blue.
Product
Reactant
Coefficient
Subscript
Given the equation:
2Na + S --> Na2S
Name the reactant(s).
Na only
S only
Na2S
2Na + S
Given the equation: 2Na + S --> Na2S
Name the product(s).
How many total atoms are in this compound? Al2O3
2
5
6
3
How many F atoms are in this compound?
MgF2
2
6
8
12
How many atoms of carbon (C) are in C6H12O6?
H2O
How many atoms are there TOTAL in: H2SO4
Identify the Products in this equation.
A
B
According to the Law of Conservation of Matter, the amount of atoms on each side of a chemical equation are always ________
different
the same
Is the compound in the pink box a Reactant or a Product?
Hint: Think about which side it is on.
Reactant
Product
What does the number 3 represent in 4NH3?
Subscript
Superscript
Coefficient
What does the number 4 represent in 4NH3?
Subscript
Superscript
Coefficient
In the equation shown, what are the reactant(s)?
N2 + H2
NH3
In the equation shown, what are the product(s)?
N2 + H2
NH3
Is this equation balanced?
Hint: Look at BOTH sides of the chemical equation.
Yes
No
What is a chemical equation?
Describes the number of elements in a compound.
One or two letters that represent the elements on the periodic table.
The number to the lower right of an element that shows the number of atoms bonded.
A written description of a chemical reaction.
