Science questions (30 pts)
At 200 degrees F, substance 1 is a liquid, substance 2 is a solid, and substance 3 is a gas. Which substance has molecules with no kinetic energy?
Substance 1
Substance 2
Substance 3
None
Chemical A and Chemical B are mixed to make a new substance. The substance has a color different than either of the original chemicals. This would be an example of a ...
chemical change.
physical change.
Which is true about a block of ice in a closed container where the temperature is increasing but the pressure stays the same?
The water molecules will slow down.
The water molecules will have an increase in kinetic energy
The atoms in each water molecule will separate
The water molecules making up the ice undergo a chemical change
Which is an endothermic phase change?
melting
freezing
condensation
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