Mrs. Miller - 2009. freeze, melt, or evaporate When a substance changes in one of these 3 ways, it has made a physical change.

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Presentation transcript:

Mrs. Miller

freeze, melt, or evaporate

When a substance changes in one of these 3 ways, it has made a physical change.

chemical changes

What type of changes occur when one or more substances are changed to form a new substance.

evaporate

When a liquid disappears into a vapor, it is said to _____.

A new substance is formed

What happens during a chemical change.

It has turned orange

A shovel has been left outdoors and has rusted. What evidence shows a chemical reaction has taken place?

Solid

This is a substance that has a definite volume and holds its own shape.

Liquid

This is matter that takes the shape of its container because it has a definite volume but no definite shape.

Matter is neither created or destroyed

Matter may undergo changes, but find a statement about matter that is always true. Matter is neither created or destroyed

reactants

Two or more substances that are put together to make something.

Gas

A ______ has no definite shape or volume.

physical changes

Changes in matter that change form but not identity are call ___.

A new substance is not formed

When two substances are put together, but they keep their own identities, what type of substance forms?

dissolved

If one substance disappears into another substance when they are mixed, it is said that they are ______.

heat

Energy that is being given off or absorbed is called _____.

It will hold its shape

How do you know when something is a solid?

reaction

Another name for a chemical change is a chemical _______.

matter

This has mass and volume.

substances

What things are made of.

weight

The pull of gravity on matter is called _______.

Physical properties

Changes in size, shape, odor, and hardness are examples of these.