What is the definition of matter?
CAST Review: Physical Sciences

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Science
•
8th Grade
•
Hard
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1.
FLASHCARD QUESTION
Front
Back
Matter is anything that has mass and takes up space.
2.
FLASHCARD QUESTION
Front
What are the three states of matter?
Back
The three states of matter are solid, liquid, and gas.
3.
FLASHCARD QUESTION
Front
What is an atom?
Back
An atom is the smallest unit of an element that retains the properties of that element.
4.
FLASHCARD QUESTION
Front
What is the difference between an element and a compound?
Back
An element is a pure substance made of only one type of atom, while a compound is made of two or more different types of atoms chemically bonded together.
5.
FLASHCARD QUESTION
Front
What is the law of conservation of mass?
Back
The law of conservation of mass states that mass is neither created nor destroyed in a chemical reaction.
6.
FLASHCARD QUESTION
Front
What is a chemical reaction?
Back
A chemical reaction is a process that involves the rearrangement of the molecular or ionic structure of a substance.
7.
FLASHCARD QUESTION
Front
What is the difference between physical and chemical changes?
Back
Physical changes affect the form of a substance, while chemical changes result in the formation of new substances.
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