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WorksheetsChemical Reaction Module TCAP Review
Total questions: 7
Worksheet time: 7mins
Name
Class
Date
1.
What is a product in the following reaction? 3Fe + 4H2O --> Fe3O4 + 4H2
a)
Fe3
b)
H2
c)
3Fe
d)
H2O
2.
If an ice cube melts (changes state from a solid to a liquid), what has happened?
a)
A chemical change
b)
A physical change
c)
An electrical change
d)
Nothing special
3.
Which of these is a result of all chemical reactions?
a)
a gas is produced
b)
a new substance forms
c)
heat is released into the environment
d)
one of the reactants changes colors.
4.
Which of these are elements?
a)
Mg
b)
CO2
c)
CoO
d)
NaCl
5.
Which procedure BEST represents the law of conservation of mass?
a)
Evaporating salt water leaves 5 grams of salt
b)
Burning 2 kilograms of wood leaves 0.4 kilograms of ash
c)
Using filter paper to separate 2 grams of solid from 10 grams of water
d)
Combining 2 grams of copper and 4 grams of sulfur to produce 6 grams of copper sulfate
6.
Which two substances are most likely represented by the diagrams?
a)
Diagram 1 - Soil; Diagram 2 - table salt
b)
Diagram 1 - Water; Diagram 2 - Vinegar
c)
Diagram 1 - Nitrogen gas; Diagram 2 - Air
d)
Diagram 1 - Glucose; Diagram 2 - Seawater
7.
Which substance is acidic?
a)
banana
b)
seawater
c)
ammonia
d)
bleach
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