Year 8 revision questions (31)

1

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.

1

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

1

Note two compounds would neutralise the acid but the question ask for the best!

1

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

4

Select the cells where there should be a tick

2

Other Answer Choices:

Fe

Co

Ca

Ce

1

Other Answer Choices:

Ni

Cu

Be

Fe

1

_______ _______ 

1

_______ 

2

Barium hydroxide + hydrochloric acid --> _______ _______ + _______ 

2

use a ________ splint
Positive result = ______________________ 

Other Answer Choices:

splint relights

glowing

lit

Squeaky pop sound

Year 8 revision questions (31)

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.

Note two compounds would neutralise the acid but the question ask for the best!

Select the cells where there should be a tick

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.

Note two compounds would neutralise the acid but the question ask for the best!

Select the cells where there should be a tick

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.

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.