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WorksheetsChapter 5 (Collins Stage 7 Science)
Total questions: 20
Worksheet time: 15mins
A (a) is made up of 2 or more atoms strongly bonded.
What is a substance made after a chemical reaction?
risk
product
reactant
model
What is something that cant dissolve?
solution
soluble
insoluble
neutralisation
_____ variable is something you keep the same during an investigation
control
dependent
constant
Which symbol shows a chemical reaction has occured?
A
B
C
D
You are testing a solution's pH, it reads, 3.02. What type of solution is it?
(a)
Identify the product(s) in this word equation
Sodium
Sodium chloride
Sodium and Chlorine
Sodium and sodium chloride
Magneisum reacts with oxygen to form magnesium oxide. The correct word equation is...
A
B
C
D
copper sulfate and sodium silicate react to make copper silicate and sodium sulfate. What are the reactants?
(a)
Sodium reacts with chlorine to produce sodium chloride. Choose the correct word equation.
sodium chloride → chlorine + sodium
sodium + carbon dioxide → sodium carbonate
sodium + chlorine → sodium chloride
Sodium + chlorine -->
sodium chloride
sodium hydroxide
sodium oxide
sodium
An acid has a pH from 0 - (a) .
When an acid and alkaline react together they produce a _____ solution.
equal
acidic
alkaline
neutral
Describe how you would test for oxygen?
They are testing for what gas?
carbon dioxide
oxygen
hydrogen
What kind of reaction is this?
physical
nuclear
environmental
Neutralisation
when testing for carbon dioxide, you use what solution?
sodium chloride
hydrochloric acid
calcium carbonate
limewater
Sodium sulfate is (a) . So you won't see any precipitates.
Testing for (a) gas the split will re-light. (catch on fire again.)
copper sulfate and sodium silicate react to make copper silicate and sodium sulfate. What are the products?
(a)
