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WorksheetsChanges: Chemical
Total questions: 42
Worksheet time: 20mins
Cooking an egg is an example of...
A chemical change
A physical change
Melting
Dissolving
Your friend decides to toast a piece of bread, but leaves it in the toaster too long. The bread is black and the kitchen is full of smoke.
Physical Change
Chemical Change
Choose the best description below for the image
physical change
chemical change
Choose the best description below for the image
physical change
chemical change
Choose the best description below for the image
physical change
chemical change
Choose the best description below for the image
physical change
chemical change
The image is best described as
Chemical Change
Physical Change
A chemical change
changes matter from one form to another.
destroys matter.
creates matter
does not change matter in any way.
Which of the following is an example of a chemical change?
melting solid gold
burning hydrogen gas
dissolving sugar in water
breaking a sheet of glass
Which of the following is a common sign that a chemical change has occurred?
A chemical has changed size.
A chemical has changed to a different state (solid, liquid or gas)
A chemical has become a different shape.
A chemical has turned a different color.
When silver metal comes in contact with sulfur, silver sulfide forms and the silver appears darker. This is a...
change of form
chemical change
change of state
physical change
Two solutions are added together and the new solution becomes hot. This tells you that
a gas is being produced.
the solutions are not soluble.
the physical properties are the same.
a chemical change is taking place.
Cooking an egg
Chemical
Physical
New substance created
Chemical
Physical
Burning wood
Chemical
Physical
Bike rusting
Chemical
Physical
Baking a cake
Chemical
Physical
Milk going sour
Chemical
Physical
Digesting food
Chemical
Physical
Apple rotting
Chemical
Physical
Fireworks
Chemical
Physical
What is a chemical reaction?
a change in matter when the molecules rearrange to make new molecules
a change in matter when matter changes its form or appearance
a change in matter when the physical appearance changes
a very boring change in matter
When energy like heat and light are given off in a chemical reaction it is called
exothermic
endothermic
eccentric
ectomorphic
When energy is absorbed and taken in during a chemical reaction it is called
exothermic
endothermic
eccentric
ectomorphic
When the matter in a chemical reaction gets colder it is called
exothermic
endothermic
eccentric
endomorphic
When the matter in a chemical reaction gets warmer it is called
exothermic
endothermic
eccentric
endomorphic
Which is the correct description of photosynthesis
Photosynthesis is a chemical reaction because the atoms of the molecules get rearranged to form new molecules
Photosynthesis is a chemical reaction because the molecules stay the same before and after the change
Photosynthesis is a physical change because nature makes it happen
Photosynthesis is a physical change because the atoms stay the same
How is a chemical change different from a physical change?
there is no difference
a physical change creates a new substance
a chemical change creates a new substance
A precipitate is a ___________ that forms when 2 liquids react together.
solid
liquid
gas
plasma
