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A student is making vegetable soup on the stove. He learned in science class that liquids boil at the same temp until they change to a gas. How will what he learned help him cook the soup and save energy?
The heat energy causes molecules to move faster and they move farther apart. Some have enough energy to escape from a liquid
Volume
Light, heat
Physical property
Mass
Change in energy
He will turn the heat up so that it just barely boils
Chemical change
Which of the following statements best explains why a substance changes from a liquid to a gas when heated?
The heat energy causes molecules to move faster and they move farther apart. Some have enough energy to escape from a liquid
Volume
Light, heat
Physical property
Mass
Change in energy
He will turn the heat up so that it just barely boils
Chemical change
______________________ is the amount of space that matter occupies.
The heat energy causes molecules to move faster and they move farther apart. Some have enough energy to escape from a liquid
Volume
Light, heat
Physical property
Mass
Change in energy
He will turn the heat up so that it just barely boils
Chemical change
A characteristic of matter that can be observed without changing the substance into something else is known as what?
The heat energy causes molecules to move faster and they move farther apart. Some have enough energy to escape from a liquid
Volume
Light, heat
Physical property
Mass
Change in energy
He will turn the heat up so that it just barely boils
Chemical change
What kinds of energy are produced by bright fireworks?
The heat energy causes molecules to move faster and they move farther apart. Some have enough energy to escape from a liquid
Volume
Light, heat
Physical property
Mass
Change in energy
He will turn the heat up so that it just barely boils
Chemical change
What often happens when a chemical or physicak change occurs?
The heat energy causes molecules to move faster and they move farther apart. Some have enough energy to escape from a liquid
Volume
Light, heat
Physical property
Mass
Change in energy
He will turn the heat up so that it just barely boils
Chemical change
A bag containing several chemicals is used for sports injuries. When the chemicals are combined, the bag becomes cold. What is this evidence of?
The heat energy causes molecules to move faster and they move farther apart. Some have enough energy to escape from a liquid
Volume
Light, heat
Physical property
Mass
Change in energy
He will turn the heat up so that it just barely boils
Chemical change
The amount of stuff in an object is known as
The heat energy causes molecules to move faster and they move farther apart. Some have enough energy to escape from a liquid
Volume
Light, heat
Physical property
Mass
Change in energy
He will turn the heat up so that it just barely boils
Chemical change
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