Chemical and Physical Changes
Flashcard
•
Science
•
9th - 12th Grade
•
Practice Problem
•
Hard
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15 questions
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1.
FLASHCARD QUESTION
Front
What is a chemical change?
Back
A process where substances combine or break apart to form new substances, often accompanied by energy changes.
2.
FLASHCARD QUESTION
Front
What is a physical change?
Back
A change that affects one or more physical properties of a substance without altering its chemical composition.
3.
FLASHCARD QUESTION
Front
What are reactants in a chemical equation?
Back
The starting substances that undergo a chemical change, found on the left side of the equation.
4.
FLASHCARD QUESTION
Front
What are products in a chemical equation?
Back
The substances formed as a result of a chemical reaction, found on the right side of the equation.
5.
FLASHCARD QUESTION
Front
What does the subscript in a chemical formula indicate?
Back
The number of atoms of an element in a molecule.
6.
FLASHCARD QUESTION
Front
What is an example of a physical change?
Back
Melting ice, as it changes from solid to liquid but remains water.
7.
FLASHCARD QUESTION
Front
What is an example of a chemical change?
Back
Rusting of iron, as it forms a new substance (iron oxide).
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