What is a physical change?
Science physical and chemical change

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•
Science
•
5th Grade
•
Hard
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15 questions
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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 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 new chemical substances. Examples include burning, rusting, and cooking.
3.
FLASHCARD QUESTION
Front
What happens to chocolate when it melts?
Back
Melting chocolate is a physical change because the chocolate retains its chemical composition.
4.
FLASHCARD QUESTION
Front
What is the direction of heat transfer?
Back
Heat moves from hot to cold.
5.
FLASHCARD QUESTION
Front
What is conduction?
Back
Conduction is the transfer of heat through direct contact between materials.
6.
FLASHCARD QUESTION
Front
What is convection?
Back
Convection is the transfer of heat through the movement of fluids (liquids and gases) caused by differences in temperature.
7.
FLASHCARD QUESTION
Front
What is radiation?
Back
Radiation is the transfer of heat in the form of electromagnetic waves, such as sunlight.
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