Worksheets22 Adv Chem Unit 7 Review
Total questions: 12
Worksheet time: 31mins
Which of these is NOT an indicator of a chemical reaction?
precipitate formation
heat released
sound produced
change in total mass of substances
What does the Law of Conservation of Mass state?
Matter cannot be gained or lost in a chemical reaction.
Matter can only be lost in a chemical reaction.
Matter can be gained and lost in a chemical reaction.
Matter can only be gained in a chemical reaction.
What does the symbol (s) mean?
solution
soluble
solid
saturated
What is the formula for phosphorus in its natural state (when it is by itself)?
P
P2
P4
P8
What numbers are used to balance chemical reactions?
Subscripts
Coefficients
Both
Neither
A precipitate is formed when:
2 clear solutions are mixed
2 clear solutions are heated
2 clear solutions are cooled
A mixed solution is separated
Combustion of a hydrocarbon will yield
O2
CO2
H2O
H2
According to the activity series, the reaction between AgCl and I2:
will occur
will not occur
According to the activity series, the reaction between Al and gaseous water:
will occur
will not occur
Which of the following is a combustion reaction?
2Ca + O2 --> 2CaO
6H2O + 6CO2 --> C6H12O6 + 6O2
2NaI + F2 --> 2NaF + I2
MgO + H2O --> Mg(OH)2
A metal chlorate decomposes into:
a metal and chlorate
a metal chloride and oxygen gas
a metal oxide and chloride gas
a metal oxide and chlorite
Which of the following is the correct chemical equation for: Hydrochloric acid and solid sodium react to produce aqueous sodium chloride and hydrogen gas.
2HCl(aq) + 2Na(s) --> 2NaCl(aq) + H(g)
HCl(aq) + Na(s) --> NaCl(aq) + H(g)
2HCl + 2Na --> 2NaCl + H2
2HCl(aq) + 2Na(s) --> 2NaCl(aq) + H2(g)
