When a new substance is formed
An example of a chemical change
This can be released during a chemical change
To make different without changing what the material is made of, such as cutting, folding, or melting
A _______________________ causes the formation of a new substance.
Rain can cause ________ to form on a metal swing set.
Rust occurs because of the _________ being exposed to moisture over a long period of time
Question 2 Two items are combined inside a balloon. The balloon is tied shut. What observation would indicate that mixing the chemical produced a gas?
Students heat a white solid in a test tube over a flame. What observation would tell the students that the solid has become a new substance?
A liquid and a solid are combined to form a mixture. Which procedure would most likely produce evidence that a chemical change occurs?
Two clear substances are combined inside a plastic bag. The plastic bag is tightly sealed. What observation would indicate that mixing the chemical produced a new substance?
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