WorksheetsWKNDHW-5.P.2.3
Total questions: 10
Worksheet time: 3hrs 30mins
Name
Class
Date
1.
Which is the best example of a change that can be undone?
a)
clay put in an oven to harden
b)
cake batter put in an oven to bake
c)
chocolate left in a warm car to melt
2.
Stanley left an ice cube on his kitchen counter. An hour later, Stanley observed that the ice cube melted. Which statement best describes this change?
a)
Ice melting is a physical change because a new substance is created.
b)
Ice melting is a chemical change because a new substance is created.
c)
Ice melting is a chemical change because it may be reversed.
d)
Ice melting is a physical change because it may be reversed.
3.
Ramano is burning wood in a bonfire. What change is occurring during the fire?
a)
The wood is gaining more mass
b)
The wood is changing into a liquid.
c)
The wood is dissolving into the ground.
d)
The wood is releasing a gas as smoke.
4.
Which is a physical change involving an egg?
a)
frying an egg
b)
boiling an egg
c)
breaking an egg
5.
Susan is completing an experiment in science. She mixes 1 cup of hot water with 2 cups of salt. What will most likely happen to the substances?
a)
The substances will blend and their properties will be changed.
b)
The substances will not blend and their properties will be changed.
c)
The substances blend and form another liquid that appears as a solid.
d)
The substances will not blend and their properties will be the same as the individual substances.
6.
When water freezes, a physical change has occurred. Which is most likely a property of the material formed by this physical change?
a)
It will never be a liquid again
b)
It will be in the form of a gas.
c)
It can be changed back into its original form.
d)
It can take the form of any container it is put in.
7.
A glass of water is placed outside during a hot day. After a few hours, someone notices that there is less water in the glass. Which best explains why this happened?
a)
water melted; gas formed
b)
water evaporated; gas formed
c)
water evaporated; liquid formed
8.
Which describes a chemical change?
a)
sugar dissolving in tea
b)
sunshine warming a sidewalk
c)
scissors cutting paper into pieces
d)
acid in the stomach digesting food
9.
Which is an example of a chemical change?
a)
melting ice to make water
b)
baking cake batter to make a cake
c)
putting cheese on bread to make a cheese sandwich
10.
A type of cold pack has two separate sections inside. One section contains a liquid and the other section contains a powder. When the cold pack is squeezed, the section that holds the liquid breaks. When the liquid combines with the powder, the pack becomes very cold.
Which is the BEST explanation why the temperature of the pack decreases when the liquid and powder combine?
Which is the BEST explanation why the temperature of the pack decreases when the liquid and powder combine?
a)
A mixture forms.
b)
A solution forms.
c)
A chemical change occurs.
d)
Thermal energy is used.
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