What is a physical change?
Physical and Chemical Changes

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Science
•
8th Grade
•
Hard
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1.
FLASHCARD QUESTION
Front
Back
A physical change is a change that affects one or more physical properties of a substance without altering its chemical composition. Examples include changes in state (like melting or freezing) and shape (like cutting or breaking).
2.
FLASHCARD QUESTION
Front
What is a chemical change?
Back
A chemical change is a change that results in the formation of new chemical substances. It involves a chemical reaction and the rearrangement of atoms. Examples include rusting of iron and spoiling of food.
3.
FLASHCARD QUESTION
Front
What is mass?
Back
Mass is a measure of the amount of matter in an object, typically measured in grams or kilograms. It is a property that depends on how much of the substance there is.
4.
FLASHCARD QUESTION
Front
What is density?
Back
Density is the mass of a substance divided by its volume. It is a measure of how much mass is contained in a given volume.
5.
FLASHCARD QUESTION
Front
What is boiling point?
Back
The boiling point is the temperature at which a liquid turns into vapor. It is a physical property of a substance.
6.
FLASHCARD QUESTION
Front
What is melting point?
Back
The melting point is the temperature at which a solid becomes a liquid. It is a characteristic property of a substance.
7.
FLASHCARD QUESTION
Front
What happens when iron rusts?
Back
When iron rusts, it undergoes a chemical change, reacting with oxygen and moisture to form iron oxide (rust).
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