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WorksheetsAcids & Alkalis
Total questions: 60
Worksheet time: 29mins
1-14
What can red cabbage be used for?
To look pretty
As an indicator
As a test for an acid
As a test for acid rain
An alkali can neutralize an acid
False
True
Acids taste _________________.
sour
spicy
sweet
bitter
Which substance is alkali?
Toothpaste
Lemon juice
Vinegar
Soft drink
Which substance is acid?
Ammonia
Toothpaste
Vinegar
Soap
Which pH levels indicated a strong acid?
1-3
4-6
8-11
12-14
Which of the following acids do we have in our stomach?
Ethanoic acid
Hydrochloric acid
Nitric acid
Sulphuric acid
Acid + Alkali --> Salt + Water
neutralization reaction
synthesis
decomposition
single displacement
These house hold items were made of ____________.
acids
alkalis
An alkali is able to “cancel” out an acid. This process is also known as?
balancing
extraction
overcome
neutralisation
In an experiment some pupils found that baking soda had a pH of about 9. Some people claim this substance can be used to treat bee stings. Bee stings must be
acidic
alkaline
neutral
life threatening
When acids and alkalis react, salts of neutral pH are formed.
True
False
Toothpaste can neutralise the acids produced by bacteria feeding on the food stuck on our teeth.
True
False
What other laboratory substance can you use to test if colourless substance is an acid or an alkali?
Catalyst
Salt
Universal Indicator
Water
What happens to the pH of an acid during neutralisation?
It stays the same
It moves toward pH 1
It moves towards pH 7
It moves towards pH 14
A wasp sting is alkali. Which substance would neutralise the sting?
Vinegar
Bleach
Baking soda
Distilled water
Which pH level indicates a strong alkali?
1-3
4-6
8-11
12-14
Which pH level indicates a weak acid?
1-3
4-6
8-11
12-14
Something that can be used to identify acid/alkali:
Indicator
Oxidator
Reductor
Terminator
To test for oxygen gas we use...
a lit splint
a glowing splint
limewater
red litmus paper
When a glowing splint is put into oxygen we will observe....
the splint relight
the splint go out
a squeaky pop
no change
When carbon dioxide is bubbled through limewater a positive result could be described as.....
colourless to milky
colourless to cloudy
a yellow precipitate forms
the solution goes clear
What is the test for CARBON DIOXIDE gas?
Put near a flame - makes a squeaky pop!
Put in a glowing splint - the splint relights!
Bubble through Lime Water - goes from clear to cloudy!
Put in a burning splint - the splint goes out!
Add to Anhydrous Copper Sulfate - goes from white to blue!
What is the test for OXYGEN gas?
Put near a flame - makes a squeaky pop!
Put in a glowing splint - the splint relights!
Bubble through Lime Water - goes from clear to cloudy!
Put in a burning splint - the splint goes out!
Add to Anhydrous Copper Sulfate - goes from white to blue!
How does carbon dioxide react with a lit splint?
Squeaky pop
It explodes
Increases flame
Extinguish flame
This is testing for....
hydrogen
oxygen
chlorine
carbon dioxide
What liquid tests for CO2?
water
limewater
chlorine
acid
What is the ph level of acid rain?
4
3
1
6
What can acid rain pollute?
Trees
Water
Air
Clouds
Which is a result of human activities?
decay of leaves in a forest
acid rain kills fish in a lake
volcanic eruptions
bad weather
Which does NOT cause acid rain?
erupting volcanoes
burning fossil fuels - coal, oil, gas
electric cars
car engines
What are the two types of acids that are in acid rain?
Iron
sulfuric
nitric
sulfur
Using fossil fuels reduce acid rain
True
False
What can you do to reduce acid rain?
Use renewable resources
Drive more
Cut down trees
Eat less meat
Acid rain can damage
Drinking water sources
Aquatic (water) life
Architecture / buildings
All options are correct
Earth has recorded _______________ temperatures in the past than it is today.
warmer
cooler
the same
What is Global Warming?
Increasing temperature in Earth's atmosphere
Decreasing temperature in a city
Increasing rain rates in Earth
Decreasing temperature rates
Global warming is caused by a phenomenon known as the greenhouse effect.
Why are too many greenhouse gases bad for the environment?
They cause trees to die.
They release heat and will be the cause of the next ice age.
They trap heat in our atmosphere causing the planet to warm up.
They are fossil fuels which pollute our environment.
Which of the following is a consequence of global warming? (Choose all that apply)
Seas rising (flooding)
Loss of habitat for animals.
More severe storms and weather.
Increased forest fires and drought.
Which one is not a fossil fuel source?
petrol
sun
coal
natural gas
If a farmer finds his soil is too acidic to grow crops he can add ____________ to neutralise the acid.
Vinegar
Lime
Hydrochloric Acid
Bleach
Indigestion is caused by too much stomach acid we can treat this with
Acidic Indigestion Medicine
Milk
Orange Juice
Alkali Indigestion Medicine
To make an experiment fair we should...
Only change one thing at a time.
Change everything at once.
Change two things at a time.
Change nothing.
Examples of variables to keep the same in an experiment are?
Volume
Concentration
Time of reaction.
How many brain cells do snails use to make decisions?
1256
3,000,000
334
2
