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WorksheetsSubunit 1 Review (Chemical Reactions)
Total questions: 26
Worksheet time: 13mins
A change that alters the physical properties of a substance without changing its composition.
Physical Change
Chemical Change
Water freezing into ice is an example of a...
Physical Change
Chemical Change
A change in matter that forms one or more new substances with new chemical properties is a/an...
Physical Change
Chemical Change
Which of the following indicates a chemical change?
Change in state of matter
Temperature change
Change in size
Change in shape
Which of the following DOES NOT indicate a chemical change/reaction is occurring?
Color Change
Formation of a Precipitate
Formation of gas/bubbles
State of matter change
We use chemical equations to show what happens in a....
Chemical Change
Physical Change
Which of the following indicates a PHYSICAL change?
Change in temperature
Change in shape
Formation of a precipitate
Change in color
Chemical or Physical? Glass breaking into tiny shards
Chemical Change
Physical Change
Physical or Chemical Change? Iron rusts
Chemical Change
Physical Change
Physical or Chemical Change?
Chemical Change
Physical Change
Physical or Chemical Change?
Physical Change
Chemical Change
Physical or Chemical Change? Frying an egg
Physical Change
Chemical Change
Physical or Chemical Change? Baking a cake
Physical Change
Chemical Change
Physical or Chemical Change? Logs burning in a campfire
Physical Change
Chemical Change
Is melting iron a physical or chemical change?
Physical Change
Chemical Change
Physical or Chemical Change? Sour milk
Physical Change
Chemical Change
What is matter?
a pure substance
an element
anything that occupies space and possesses mass
a compound
Which is an example of a physical property?
ability to react with acid
flammability
state of matter
ability to react with oxygen
Which of the following is a chemical change?
human digestion of food
melting a chocolate bar
cutting a tree down
Has a density of 1 g/mL
What kind of properties can only be observed when a substance changes into a different substance?
physical properties
liquid properties
chemical properties
real properties
The tool used to measure the mass of a substance or object is a ______________.
balance
graduated cylinder
thermometer
ruler
In an exothermic reaction, heat is ...
taken in or absorbed
given out or released
In an endothermic reaction, heat is ...
taken in or absorbed
given out or released
What type of reaction occurs in a hand warmer?
exothermic
endothermic
If a chemical reaction is EXOTHERMIC, the temperature would....
Stay the same
Increase
Decrease
When Alka-seltzer is dissolved in water, there is a decrease in temperature. This is an example of...
Endothermic reaction
Exothermic reaction
Dissolving a salt
physical change
