WorksheetsChemical Reactions
Total questions: 5
Worksheet time: 13mins
Name
Class
Date
1.
In a reaction A + B ----> C, reactant A has 5g and product C has 9g. How many grams should reactant B have?
a)
4g
b)
5g
c)
9g
d)
14g
2.
Matter cannot be created nor destroyed: it can only be
a)
Destroyed a little bit
b)
Invisible
c)
Transformed, changed
d)
None of the above
3.
Which Chemical Equation is Balanced?
a)
CH₄+O₂------CO₂+2H₂O
b)
H₂+O₂-----2H₂O₄
c)
4Al+3O₂-----2Al₂O₃
4.
Is this equation balanced or unbalanced?
2Fe2O3 + 3C --> 4Fe + 3CO2
a)
balanced
b)
unbalanced
5.
If a reaction starts with a total of 75g of reactants, it should produce
a)
a total of 40g of products
b)
a total of 75g of products
c)
a total of 180 g of products
d)
None of the above
100 %
