the reactivity series and displacement reactions

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17 Terms

1
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what is the order of the reactivity series?

potassium, sodium, lithium, calcium, magnesium, carbon, zinc, copper

2
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what are the similarities between metals?

they all have electrons in the outermost shell that they want to get rid of so when they react with other substances, they get rid of these outer shell electrons and forms positive ions

3
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reactivity of a metal

how easily it forms these positive ions

4
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why are carbon and hydrogen included in the reactivity series if they're not metals?

to be used as references to compare the metals agains

5
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what is the equation when a metal reacts with an acid?

metal + acid > salt + hydrogen

2K (potassium) + 2HCl (hydrochloric acid) > 2KCl (potassium chloride) + H2 (hydrogen)

6
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how would potassium react with an acid?

it would react explosively and possibly catch fire and whiz around as it produces loads of hydrogen

7
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what happens when we get further down the reactivity series?

reactions would gradually get less violent

8
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how would magnesium react with an acid?

it will just produce loads of bubbles as the solid metal disappears

9
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how would zinc and iron react with an acid?

fewer bubbles than magnesium

10
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how would copper react with an acid?

it won't react at all

11
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other than watching the reactions to see how violent they are, what else can you measure?

the temperature change

12
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the ____ reactive metals will produce the ____ heat

most, most

13
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how can we make this a fair test?

- each of the metal samples must have the same mass/surface area

- saem type and concentration of acid we use

14
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what is the equation when a metal reacts with water?

metal + water > metal hydroxide + hydrogen

2Li (lithium) + 2H2O (water) > 2LiOH ( lithium hydroxide) + H2 (hydrogen)

15
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which metals won't react at all with water?

zinc, iron and copper

16
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when put into water, magnesium reacts very ________

slightly

17
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displacement reaction

more reactive metals can displace less reactive ones

e.g. Mg (magnesium) + FeSO4 (iron sulphate) > MgSO4 (magnesium sulphate) + Fe (iron)