C5 - Chemical Change

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Total cards: 24•Content version: v4•Public deck•Updated: 8/1/2026

Card preview (24)

Front (Question)

what is the mnemonic device used to remember the reactivity series?

Back (Answer)

People Say Little Children Make A Zebra Ill Constantly Sniffing Giraffes

Front (Question)

list the elements in the reactivity series

Back (Answer)

Potassium K Sodium Na Lithium Li Calcium Ca Magnesium Mg Aluminum Al Zinc Zn Iron Fe Copper Cu Silver Ag Gold Au

Front (Question)

define oxidisation

Back (Answer)

the loss off electrons or the gain of oxygen

Front (Question)

define reduction

Back (Answer)

the gain of electrons or the loss of oxygen

Front (Question)

define half equation

Back (Answer)

a chemical equation showing electrons and ions

Front (Question)

define displacement

Back (Answer)

where a more reactive element displaces a less reactive element from its compound

Front (Question)

define ore

Back (Answer)

how a metal is found in the earth when it is bonded with another element - usually oxygen

Front (Question)

What are the 2 ways of extracting a metal from its ore?

Back (Answer)

• with a displacement reaction using carbon, when the metal is less reactive than carbon • using electrolysis, when the metal is more reactive than carbon

Front (Question)

What are hydrochloric acid salts named? HCl

Back (Answer)

chlorides

#10

Front (Question)

What are sulfuric acid salts named? H2SO4

Back (Answer)

sulfates

#11

Front (Question)

What are nitric acid salts named? HNO3

Back (Answer)

nitrates

#12

Front (Question)

define base

Back (Answer)

a compound that neutralises an acid to form a salt

#13

Front (Question)

define alkali

Back (Answer)

a hydroxide (OH-) which is a soluble base

#14

Front (Question)

list the properties of acids

Back (Answer)

• pH lower than 7 • a compound with hydrogen • they neutralise bases to form salts • dissolve in water to form hydrogen ions

#15

Front (Question)

give an example of a weak acid

Back (Answer)

• citric acid • ethanoic acid

#16

Front (Question)

give an example of a strong acid

Back (Answer)

• hydrochloric acid • sulfuric acid • nitric acid

#17

Front (Question)

list the properties of bases and alkalis

Back (Answer)

• pH higher than 7 • they neutralise acids • alkalis dissolve in water to form hydroxide ions • alkalis are soluble bases

#18

Front (Question)

give an example of a weak alkali

Back (Answer)

ammonium hydroxide

#19

Front (Question)

give an example of a strong alkali

Back (Answer)

• sodium hydroxide • potassium hydroxide

#20

Front (Question)

name the 2 factors that make acids strong

Back (Answer)

• they fully disassociate in water • concentration

#21

Front (Question)

list 4 sets of reactants that create salts

Back (Answer)

acid + hydroxide acid + metal acid + metal oxide acid + carbonate

#22

Front (Question)

acid + base word equation

Back (Answer)

acid + base → salt + water

#23

Front (Question)

acid + metal word equation

Back (Answer)

acid + metal → salt + hydrogen

#24

Front (Question)

acid + metal oxide word equation

Back (Answer)

acid + metal oxide → salt + water