Physical and Chemical Changes
Flashcard
•
Science
•
7th Grade
•
Hard
+2
Standards-aligned
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15 questions
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1.
FLASHCARD QUESTION
Front
What is a physical change?
Back
A physical change is a change that affects one or more physical properties of a substance without altering its chemical composition. Examples include melting, freezing, and dissolving.
2.
FLASHCARD QUESTION
Front
What is a chemical change?
Back
A chemical change is a change that results in the formation of one or more new substances with different properties. Examples include rusting, burning, and cooking.
Tags
NGSS.MS-PS1-2
NGSS.MS-PS1-5
3.
FLASHCARD QUESTION
Front
What are signs that a chemical reaction has occurred?
Back
Signs of a chemical reaction include the formation of a gas, color change, temperature change, and the formation of a precipitate.
Tags
NGSS.MS-PS1-2
4.
FLASHCARD QUESTION
Front
Is melting ice a physical or chemical change?
Back
Melting ice is a physical change because it changes from solid to liquid without altering its chemical composition.
5.
FLASHCARD QUESTION
Front
What happens during a chemical change?
Back
During a chemical change, the bonds between atoms are broken and new bonds are formed, resulting in new substances.
Tags
NGSS.MS-PS1-2
NGSS.MS-PS1-5
6.
FLASHCARD QUESTION
Front
What is an example of a physical change?
Back
An example of a physical change is the melting of wax.
Tags
NGSS.MS-PS1-4
7.
FLASHCARD QUESTION
Front
What is an example of a chemical change?
Back
An example of a chemical change is the reaction of vinegar and baking soda, which produces carbon dioxide gas.
Tags
NGSS.MS-PS1-2
NGSS.MS-PS1-5
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