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WorksheetsSECOND QUARTER EXAMINATION - SCIENCE 4
Total questions: 50
Worksheet time: 13hrs 30mins
A change that alters the physical properties of a substance without changing its composition.
Physical Change
Chemical Change
Homogeneous mixture
Heterogeneous mixture
Which process is an example of a physical change?
Ice melting
Milk souring
Metal rusting
Wood burning
Which process is a sign of a chemical change?
A rotting potato gives off a bad smell
A melting block of ice leaves a large puddle
A cloud quickly changes shape when blown by wind
A plaster statue breaks when it falls onto the floor
Which process is an example of a chemical change?
An iron nail rusting
Bath water cooling while you take a bath
A piece of metal being heated until it expands
A glass window breaking when hit with a baseball
Sean's bike begins to rust in the winter. What tells Sean that a chemical change is happening?
The paint is scratched
The metal fender is bent
The metal is beginning to rust
The bicycle was outside all winter
What is a change in which new substances are formed?
Physical change
Chemical change
Mixture
Solution
Chemical or Physical? Glass breaking into tiny shards
Chemical Change
Physical Change
Physical or chemical change? Melting ice cream
Physical change
Chemical change
Wood that is burning in a brush pile has heat, and produces ashes.
Physical change
Chemical change
Physical or chemical change? Mowing the lawn
Physical change
Chemical change
Physical or Chemical change? Frying an egg
Physical change
Chemical change
This change is seen in the roofs of houses, foot bridges and metal gates. (Answer in capital letters)
(a)
This is a natural process that causes fruits and vegetables to rot and produce foul smell. (Write your answer in capital letters)
(a)
This occurs when silver sulfide forms on silverware and pieces of silver jewelry to form discoloration. (Write your answer in capital letters)
(a)
What do you call this product of chemical reaction between iron and oxygen? (Write your answer in capital letters)
(a)
What is the chemical name of RUST? (Answer in capital letters)
(a)
It is the result of harmful chemical reactions that occur in landfills, bodies of water, and air? (Answer in capital letters)
(a)
What do you call the enrichment of the water with chemical nutrients disposed into it? (Answer in capital letters)
(a)
What do you call the rapid increase of algae in the water? (Answer in capital letters)
(a)
What type of pollution is this?
Light pollution
Air pollution
Noise pollution
Water pollution
What type of pollution is this?
Land pollution
Air pollution
Light pollution
Water pollution
What type of pollution is this?
Land pollution
Air pollution
Noise pollution
Water pollution
What type of pollution is this?
Land pollution
Air pollution
Noise pollution
Water pollution
Which pollution is caused by burning of fossil fuels such as cars and airplanes?
Air pollution
Noise pollution
Land pollution
Water pollution
Which of the following is a source of air pollution?
Loud sounds
Factories
Scattered empty plastic bottles
Stack of papers
This picture shows people walking through a highly-polluted city. From what type of pollution are they protecting themselves based on what they are wearing?
air pollution
water pollution
land pollution
noise pollution
Which of the following does NOT cause water pollution?
Oil spills
Garbage
Fertilizers from farms
Smoke
Oil spillage in water is what type of pollution?
Land Pollution
Water Pollution
Noise Pollution
Air Pollution
This is an effect of which type of pollution?
Water pollution
Land pollution
Noise pollution
Air pollution
Which pollution cause hearing loss in organisms?
Air pollution
Water pollution
Land pollution
Noise pollution
Blaring loud sound from a speaker is an example of
Air Pollution
Noise Pollution
Land Pollution
Water Pollution
What is the effect of soil pollution?
Breathing problems.
Water is not safe for consumption.
Harmful to sea creatures.
Bad smell and health problem.
AGREE or DISAGREE
Everyday you see changes around you.
(a)
AGREE or DISAGREE
The foods that we cook and eat and products that we use are effects of changes in materials.
(a)
AGREE or DISAGREE
Food and household materials in supermarkets are mostly products of chemical change.
(a)
AGREE or DISAGREE
Yogurt is a result of bacterial action on milk.
(a)
AGREE or DISAGREE
Kerosene, coal or gasoline provides electricity and power up vehicles for transport.
(a)
AGREE or DISAGREE
Water is polluted when you can no longer use it for any purpose.
(a)
AGREE or DISAGREE
Disposal of detergents, soap suds and fertilizers in bodies of water causes eutrophication.
(a)
AGREE or DISAGREE
Algal bloom is a good result of eutrophication.
(a)
AGREE or DISAGREE
The increasing amount of wastes dumped in landfills do not pollute the soil.
(a)
AGREE or DISAGREE
The burning of plastic containers and other left-over household products is non-hazardous to people and to the environment.
(a)
AGREE or DISAGREE
Rust causes the deterioration of metal gates.
(a)
AGREE or DISAGREE
Regular exposure to high sound levels may lead to hearing problems.
(a)
What is the meaning of the acronymn LPG? Answer in capital letters.
(a)
