15 questions
What is a sign that a chemical change has occurred?
The physical properties are the same
The state of the matter has changed
The production of heat, light, or smoke is observed
The substance seems to have disappeared
An example of a change of state is_________?
liquid filling a glass
exposing photographic film
ice cubes melting
paper burning
Examples of chemical properties include________?
length and mass
flammability and reactivity
melting point and boiling point
color and shape
A change in the chemical properties of a substance results in____________?
fire
a change of state
the same substance
a new substance
Can mass be created or lost in a chemical change?
Yes
No
Sometimes
An example of a chemical change is burning. True or False
True
False
A change of state, such as boiling, is an example of a chemical change. True or False?
True
False
Grilling a piece of fish and baking chocolate cupcakes are examples of?
Physical Change
Chemical Change
Chemical Reaction
None of the above
Breaking a glass bottle and dissolving sugar in hot water are examples of?
Chemical Reaction
Chemical Change
Physical Change
None of the above
Which is an example of a chemical change?
breaking a bottle
cooking an egg
cutting carrots
freezing water
Which is an example of a physical change?
baked bread rising
metal rusting
water boiling
wood burning
A _______ is a change in a substance that does not change its identity, such as a change of state?
Physical Change
Chemical Change
Properties that describe how a substance looks, feels, or its state of matter, etc. are __________________.
Chemical properties
Physical properties
Mr. Hilliard tears a piece of notebook paper into smaller pieces, this is a ________?
A change in mass
A physical change
A chemical change
A change in energy