Font size
WorksheetsChemical and Physical Changes Quiz
Total questions: 25
Worksheet time: 13mins
An experiment was done where a crystal substance was added to a beaker of liquid that was room temperature. The following observations were made during the experiment. 1. The crystals dissolved 2. A precipitate formed 3. The bottom of the beaker felt warm to the touch 4. Bubbles formed in the water. All of the observations are evidence that a chemical change occurred EXCEPT—
observation I.
observation II.
observation III.
observation IV.
Physical changes affect the—
color of an object.
chemical structure of an object.
Flammability of an object
observable properties of an object.
Which of the following is an example of a chemical change?
Mixing two substances and seeing bubbles
Dissolving powder into water
Coloring on paper to produce a color change
Cutting wood to change the shape
Which of the following is a sign that a chemical reaction (or change) has occurred?
change in shape
melting
formation of a gas
dissolving
A chemical change is different than a physical change because in a chemical change
Chemicals are used
Molecules do not physically touch
A new substance is formed and in a physical change no new substance is formed
The change can be seen but in a physical change it cannot
What is a precipitate, and what does its formation show?
A solid substance formed when two clear solutions are mixed, indicating a chemical change
A gas formed during a physical change, indicating a change in state
A liquid formed during a chemical change, indicating a change in temperature
Bubbles of carbon dioxide gas form, indicating a chemical reaction
For the remaining questions, determine if the example is either a physical or chemical change. Write "P" in the blank for a physical change and a "C" for a chemical change.
Melting Butter
(a)
For the remaining questions, determine if the example is either a physical or chemical change. Write "P" in the blank for a physical change and a "C" for a chemical change.
Burning a marshmallow
(a)
For the remaining questions, determine if the example is either a physical or chemical change. Write "P" in the blank for a physical change and a "C" for a chemical change.
Dissolving sugar in tea
(a)
For the remaining questions, determine if the example is either a physical or chemical change. Write "P" in the blank for a physical change and a "C" for a chemical change.
Melting chocolate
(a)
For the remaining questions, determine if the example is either a physical or chemical change. Write "P" in the blank for a physical change and a "C" for a chemical change.
Fireworks exploding
(a)
Determine if the example is either a physical or chemical change. Write "P" for a physical change and "C" for a chemical change: Melting Butter
(a)
Determine if the example is either a physical or chemical change. Write "P" for a physical change and "C" for a chemical change: Burning a marshmallow
(a)
Determine if the example is either a physical or chemical change. Write "P" for a physical change and "C" for a chemical change: Dissolving sugar in tea
(a)
Determine if the example is either a physical or chemical change. Write "P" for a physical change and "C" for a chemical change: Melting chocolate
(a)
Determine if the example is either a physical or chemical change. Write "P" for a physical change and "C" for a chemical change: Fireworks exploding
(a)
Determine if the example is either a physical or chemical change. Write "P" for a physical change and "C" for a chemical change: Baking a cake
(a)
Determine if the example is either a physical or chemical change. Write "P" for a physical change and "C" for a chemical change: Cutting celery
(a)
Determine if the example is either a physical or chemical change. Write "P" for a physical change and "C" for a chemical change: Cracking an egg
(a)
Determine if the example is either a physical or chemical change. Write "P" for a physical change and "C" for a chemical change: An Apple rotting
(a)
Determine if the example is either a physical or chemical change. Write "P" for a physical change and "C" for a chemical change: Milk souring and forming clumps
(a)
Determine if the example is either a physical or chemical change. Write "P" for a physical change and "C" for a chemical change: Iron nail forming rust
(a)
Determine if the example is either a physical or chemical change. Write "P" for a physical change and "C" for a chemical change: Statue of Liberty turning green
(a)
Determine if the example is either a physical or chemical change. Write "P" for a physical change and "C" for a chemical change: Boiling Water
(a)
Determine if the example is either a physical or chemical change. Write "P" for a physical change and "C" for a chemical change: Folding paper into a paper airplane
(a)
