WorksheetsYear 10 - Chemical Reactions
Total questions: 20
Worksheet time: 10mins
Name
Class
Date
1.
Chemical compound with a pH < 7 that tastes sour and contains at least one hydrogen atom
a)
acid
b)
aciid
c)
accid
d)
aced
2.
A compound that forms hydroxyl ion when dissolved in water and has a pH > 7
a)
base
b)
bass
c)
bace
d)
bas
3.
Substance that changes colour in the presence of an acid or base
a)
indicator
b)
indicater
c)
indikator
d)
indikater
4.
When an acid and a base react to form a salt and water
a)
neutralisation
b)
nuetralisation
c)
nutralisation
d)
neutralisacion
5.
Substance that is neither an acid nor a base; pH = 7
a)
neutral
b)
nutral
c)
nuetral
d)
neutrel
6.
Process in plants in which glucose is made from water and carbon dioxide
a)
photosynthesis
b)
photosynthisis
c)
fotosynthesis
d)
photosinthesis
7.
Insoluble compound formed in a reaction
a)
precipitate
b)
pricipitate
c)
precepitate
d)
precipita
8.
A biochemical process where cells obtain energy by combining oxygen and glucose, releasing carbon dioxide, water, and ATP
a)
respiration
b)
respiracion
c)
respirasion
d)
resperation
9.
The variable that is measured in an experiment
a)
dependent
b)
dependant
c)
dipendent
d)
dipendant
10.
The variable that is changed in an experiment
a)
independent
b)
independant
c)
indipendant
d)
indipendent
11.
A chemical reaction that releases energy by light or heat
a)
exothermic
b)
exothermec
c)
exthermic
d)
exothemic
12.
A chemical reaction that absorbs energy from its surroundings
a)
endothermic
b)
endithermic
c)
endethermic
d)
endotharmic
13.
The extent to which an experiment yields the same results on repeated trials
a)
reliability
b)
reliablity
c)
reliabilty
d)
reliabillity
14.
Reaction that involves a substance rapidly combining with oxygen, usually accompanied by a flame; burning
a)
combustion
b)
combastion
c)
combuston
d)
combusstion
15.
Reaction that involves the breakdown of a compound into simpler substances
a)
decomposition
b)
decompasition
c)
decompusition
d)
dicompusition
16.
A substance that increases the rate of a chemical reaction
a)
catalyst
b)
cataylst
c)
catalist
d)
catals
17.
Solution formed by soluble bases
a)
alkaline
b)
alkalene
c)
alcaline
d)
alkalin
18.
Reaction environment rich in oxygen
a)
aerobic
b)
arobic
c)
aearobic
d)
aerobec
19.
Reaction that involves the oxidation of a substance, usually a metal
a)
corroson
b)
corrosion
c)
corossion
d)
corrocion
20.
Reaction environment without oxygen
a)
anaerobic
b)
anerobic
c)
anearobic
d)
aenarobic
100 %
