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The _________ is an example of a physical change.
Scientists use these laws to make predictions about the motion of objects.
evaporation
decreasing the amount of force necessary to complete a task
burning
strong base
escalator
all answers are physical changes
Bicycle
What is one way in which simple machines make work easier?
Scientists use these laws to make predictions about the motion of objects.
evaporation
decreasing the amount of force necessary to complete a task
burning
strong base
escalator
all answers are physical changes
Bicycle
A solution with a pH of 13 is a ____.
Scientists use these laws to make predictions about the motion of objects.
evaporation
decreasing the amount of force necessary to complete a task
burning
strong base
escalator
all answers are physical changes
Bicycle
How do Newton’s laws help scientists understand more about the physical world?
Scientists use these laws to make predictions about the motion of objects.
evaporation
decreasing the amount of force necessary to complete a task
burning
strong base
escalator
all answers are physical changes
Bicycle
An example of a change of state is __________.
Scientists use these laws to make predictions about the motion of objects.
evaporation
decreasing the amount of force necessary to complete a task
burning
strong base
escalator
all answers are physical changes
Bicycle
Which of the following is an example of a chemical change?
Scientists use these laws to make predictions about the motion of objects.
evaporation
decreasing the amount of force necessary to complete a task
burning
strong base
escalator
all answers are physical changes
Bicycle
All of these are simple machines EXCEPT .
Scientists use these laws to make predictions about the motion of objects.
evaporation
decreasing the amount of force necessary to complete a task
burning
strong base
escalator
all answers are physical changes
Bicycle
___________ is a moving inclined plane.
Scientists use these laws to make predictions about the motion of objects.
evaporation
decreasing the amount of force necessary to complete a task
burning
strong base
escalator
all answers are physical changes
Bicycle
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