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20 questions
what is a reactant?
a volatile chemical
a dangerous substance
the substance(s) you start with in a chemical reaction
the substance(s) you end with in a chemical reaction
what is a product?
a volatile chemical
a dangerous substance
the substance(s) you start with in a chemical reaction
the substance(s) you end with in a chemical reaction
The number of atoms you begin with in a chemical reaction...
must be the same as the number of atoms you end with
must be an even number
can be different to the number you finish with
changes depending on how much energy is formed
What mathematical function do coefficients perform in a balanced equation?
addition
multiplication
subtraction
division
When the equation is balanced what are the correct coefficients?
1, 1, 2
1, 3, 1
2, 2, 3
2, 3, 2
What are the correct coefficients when the equation is balanced?
2, 3, 4
4, 3, 2
1, 1, 2
2, 1, 1
Which of the following is an example of a synthesis reaction?
Which of the following is an example of a decomposition reaction?
Which of the following is an example of a single replacement reaction?
Which of the following is an example of a double replacement reaction?
The red numbers in the image represent
subscripts
coeffiecients
roman numerals
none of the answer options are correct
The blue numbers in the image represent
subscripts
coeffiecients
roman numerals
none of the answer options are correct
When balanced, the correct coefficients for the equation are:
1, 3, 3, 1
1, 3, 2, 1
2, 3, 3, 1
1, 1, 3, 1
When balanced, the correct coefficients for the equation are:
2, 1, 3, 1
1, 2, 1, 2
1, 2, 2, 1
2, 1, 1, 2
When balanced, the correct coefficients for the equation are:
3, 1, 2, 1
1, 2, 3, 4
2, 1, 2, 1
1, 2, 1, 1
When balanced, the correct coefficients for the reaction are:
1, 1, 1, 1
1, 2, 1, 1
2, 1, 1, 2
2, 1, 2, 1
When balanced, the correct coefficients are:
2, 2, 2
2, 2, 3
3, 2, 2
1, 2, 3
Why must the number of atoms on either side of the arrow be equal to each other in a chemical equation?
to abide by the law of conservation of energy
to abide by law of conservation of mass
to abide by the law of fundamental equations
because everything must be even for the universe to stay in balance
When balancing a chemical equation, you can only change _________, you can never change _______!
coefficients, subscripts
subscripts, coefficients
formulas, subscripts
coefficients, formula units
What type of reaction involves a fuel being burned in the presence of oxygen in order to produce carbon dioxide and water?
single replacement
synthesis
double replacement
combustion
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