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WorksheetsScience as Inquiry and Physical/Chemical Changes
Total questions: 18
Worksheet time: 27mins
Name
Class
Date
1.
One type of cold remedy is an effervescent tablet that breaks down in water. When the tablet is placed in water, it forms gas bubbles. In this example, the formation of gas
a)
is a physical property
b)
occurs when adding water to acid
c)
is a sign of a chemical change
d)
occurs wwhen the water boils
2.
A type of cold pack has two seperate sections inside. One section contains a liquid and the other section contains a powder. When the cold pack is squeezed, the liquid and powder mix, making the pack become cold. Which is the best explanation of why the pack gets cold?
a)
a mixture forms
b)
a solution forms
c)
a chemical change occurs
d)
thermal energy is used
3.
Campers burn logs in a campfire. How will the campers know that a chemical change has taken place?
a)
The logs changed shape
b)
The rocks glowed when heated
c)
The wood became a different substance
d)
The ground absorbed heat from the coals
4.
Over time iron becomes rust when combines with water and oxygen. Which type of change must occur for rust to form?
a)
chemical
b)
mechanical
c)
nuclear
d)
physical
5.
Which property of sugar remains after sugar is dissolved in water?
a)
color
b)
taste
c)
shape
d)
texture
6.
Sam lost his hammer outside and when he found it , parts of it were covered in brown, flaky crust. Which type of change occurred when rust formed on the hammer?
a)
chemical
b)
electrical
c)
thermal
d)
physical
7.
Which example BEST describes a physical change?
a)
baking a pie
b)
burning a candle
c)
making a paper airplane
8.
Glenn accidentally left his crayon box in the car on a hot day. Which BEST explains what happened to his crayons?
a)
crayons melted; changed from solid to liquid
b)
crayons melted; changed from liquid to solid
c)
crayons evaporated; changed from liquid to solid
9.
A glass of salt water is put on a windowsill. After a week the water is gone and there is a film of white crystals left on the bottom of the glass. Which BEST explains what happened?
a)
The salt caused the water to dry up
b)
The water evaporated and left the salt behind
c)
The water and the salt evaporated and left a film behind.
10.
Which example BEST describes a physical change?
a)
iron rusting
b)
charcoal burning
c)
an ice cube melting
d)
a marshmallow burning
11.
A piece of wood is broken into several smaller pieces. This is an example of what kind of change?
a)
physical
b)
chemical
c)
electrical
d)
mechanical
12.
Which type of change occurs when the size, shape, appearance, or volume of a substance is changed without changing its composition?
a)
chemical
b)
radiation
c)
nuclear
d)
physical
13.
Which statement BEST describes why baking a cake is an example of a chemical chance?
a)
The process takes place in an oven.
b)
The process requires heat energy
c)
The process cannot be reversed
d)
The process can be repeated,
14.
Liz put a bottle of juice in the freezer. When she checked it a few hours later, she noticed pieces of ice in the juice. What best describes what happened to the bottle of juice?
a)
the juice changed from liquid to gas
b)
the juice changed from solid to gas
c)
the juice had begun to change from liquid to solid
d)
the juice had begun to change from solid to liquid
15.
Using your senses to notice the world around you
a)
ask a question
b)
form a hypothesis
c)
conduct an experiment
d)
make an observation
16.
After you draw a conclusion, your should
a)
make an observation
b)
report your findings
c)
analyze your data
d)
conduct experiment
17.
If you know you are doing an experiment in Science, you should wear
a)
open-toed shoes
b)
flip-flops
c)
closed toe shoes
d)
no shoes
18.
What should you do with the data you collect in an experiment?
a)
draw it
b)
report it
c)
observe it
d)
analyze it
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