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Year 8 revision questions (31)

Last updated 5 months ago
25 questions
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Note: metals above hydrogen in the reactivity series will not react with acids.
Note: The oxides of metals below carbon in the reactivity series will be displaced by carbon.

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Method
1. Put 5cm3 of dilute HCl in three different _______________
2. add the metal samples to the HCl
3. Note the rate of _____________
Control variables
same concentration
volume of hydrochloric acid
same mass of metal (we will look into this further in Year 10)
same particle size of metal
same temperature of acid
Results
no bubbles for ___________
magnesium bubbles ____________________ than iron
Reactivity series from least to most reactive is
Least reactive _______ ______________ Most reactive
Other Answer Choices:
test tubes
Cu
bubbling
Fe
more vigorously
Mg
copper
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Note two compounds would neutralise the acid but the question ask for the best!

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From 0-26 cm3 the pH decreases ___________
at 26 cm3 the pH decreases ____________
From 26 - 50 cm3 the pH decreases ___________
Other Answer Choices:
rapidly
slowly
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Select the cells where there should be a tick

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Other Answer Choices:
Fe
Co
Ca
Ce
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Other Answer Choices:
Ni
Cu
Be
Fe
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_______ _______
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_______
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Barium hydroxide + hydrochloric acid --> _______ _______ + _______
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use a ________ splint
Positive result = ______________________
Other Answer Choices:
splint relights
glowing
lit
Squeaky pop sound