WorksheetsREWARDS Lesson 14
Total questions: 10
Worksheet time: 50mins
What happens to molecules when energy is added to them?
Nothing changes
When energy is added to molecules, they vibrate faster.
When energy is added to molecules, they vibrate slower.
When does a phase change occur?
A phase change occurs when enough energy is added, and the molecules become jumpier.
No one really knows.
A phase change occurs when energy is reduced and molecules slow down.
In a solid, do molecules vibrate slowly or quickly?
Slowly
Quickly
Ice changing to water is an example of:
A Phase Change
Stagnation
A decrease in energy.
When energy is lost, what happens to the molecules in matter?
When energy is lost, the molecules in matter slow down.
When energy is lost, the molecules in matter don't change.
When energy is lost, the molecules in water speed up and get jumpier.
What happens to a liquid if it loses energy?
It becomes vapor.
It becomes a gas.
It becomes a solid.
Nothing changes
What is a compound?
A compound is a combination of two or more different elements.
A compound is one element.
What is an example of a compound?
Carbon Dioxide. It is formed when carbon and oxygen are combined.
Oxygen, one of the most well known elements.
Gallium, an element that melts at 30 degrees Celsius.
Dry Ice is made from:
Hydrogen
Carbon Dioxide
Oxygen
Gallium
What happens when someone places dry ice into warm water?
The molecules vibrate fast enough to turn the solid dry ice into a gas.
The molecules slow way down and the dry ice changes color.
The molecules slow way down and the dry ice melts into water.
