Font size
WorksheetsAcids, alkalis and electricity
Total questions: 18
Worksheet time: 12mins
The chemicals created after a chemical reaction is called _________.
reactant
product
reactor
prodant
When carbon-based fuel is burned completely, what is produced?
carbon
carbon monoxide
carbon dioxide
carbon trioxide
When a metal reacts with an acid, __________ and __________ are produced.
alkali
salt
oxygen gas
hydrogen gas
How does toothpaste function?
It neutralises the acid produced by bacteria.
It neutralises the alkali produced by bacteria.
It poisons the bacteria in our mouths.
It reacts with the bacteria to create sugar.
What do farmers use to neutralise the acid in the soil?
coal
lemon
lime (the fruit)
lime (not the fruit)
Which of the following are clues that a reaction has occured? Choose two.
There is a colour change
The volume of a reactant increases
Gas turns into a liquid
A precipitate is formed
Which of the following is a way to test the presence of hydrogen gas?
using a glowing splinter
using a universal indicator
using a burning splinter
using a litmus paper
Which of the following is a way to test the presence of oxygen gas?
using a glowing splinter
using a universal indicator
using a burning splinter
using a litmus paper
When carbon dioxide is tested with a burning splinter, the fire _______________.
gets bigger
gets smaller
doesn't change
is extinguished
When carbon dioxide is added to limewater, it
explodes
turns cloudy
releases oxygen
creates lime (not the fruit)
Electrons have a ____________ charge.
excited
neutral
positive
negative
When a cell is connected to a wire, the electrons flow through the wire and towards the ________ terminal.
positive
negative
live
ground
What does this symbol represent?
pizza
switch
lamp
cell
What does this symbol represent?
ammeter
switch
lamp
cell
Current is _______________.
the level of charge in a battery
the rate of flow of electrons
the acidity of a solution
the alkalinity of a solution
The unit of measurement for current is
pH
ohm
amps
ml
A conductor _______________.
absorbs electrons flowing through it
reverses the direction of electron flow
prevents electrons from flowing through it
allows electrons to flow through it
Draw a circuit that has a buzzer, a cell and a switch.
