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WorksheetsCrash Course Kids Chemical Changes
Total questions: 15
Worksheet time: 15mins
Which of the following is observed here?
A physical change because you have the same types of atoms
A physical change because you are just breaking the atoms up
A chemical change because you are forming a new substance
A chemical change because atoms are involved
A change where one or more new substances are created.
Physical Change
Chemical Change
Which of these is a result of a chemical change?
A mixture
A solution
A new substance
Melting or freezing
Wood burned in a fireplace
Chemical Change
Physical Change
When your food energy is made into energy that you use to run, energy is changing from...
Thermal to chemical
Chemical to electrical
Mechanical to electrical
Chemical to mechanical
When you eat a meal and your temperature increases, you are transforming...
Thermal energy into mechanical energy
Radiant (light) energy into mechanical energy
Chemical energy into mechanical energy
Chemical energy into thermal energy
What kind of energy is food?
Thermal energy
Mechanical energy
Solar energy
Chemical energy
When you eat lunch and then talk to your friend, that is a conversion of...
Chemical energy to sound energy
Mechanical energy to wind energy
Chemical energy into mechanical energy
Sound energy into thermal energy
What is a chemical change?
A process where substances combine to form a mixture
A change where one or more new substances are created
A change in the state of matter without forming new substances
A process of dissolving a solid into a liquid
Which of the following is an example of a chemical change?
Melting ice
Burning wood
Boiling water
Breaking glass
What happens to the molecules during a chemical change?
They rearrange to form new substances
They stay the same but move faster
They change state from solid to liquid
They dissolve in water
Which of these processes involves a chemical change?
Evaporation of water
Rusting of iron
Freezing of water
Condensation of steam
In a chemical reaction, what is conserved?
Mass
Volume
Temperature
Color
What is the result of a chemical change in terms of energy?
Energy is absorbed or released
Energy remains constant
Energy is only absorbed
Energy is only released
Which of the following is a sign of a chemical change?
Change in color
Change in shape
Change in size
Change in texture
