Elements and Compounds
Flashcard
•
Science
•
6th - 8th Grade
•
Practice Problem
•
Hard
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15 questions
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1.
FLASHCARD QUESTION
Front
What is an element?
Back
An element is a pure substance that cannot be broken down into simpler substances by chemical means. Examples include hydrogen, oxygen, and carbon.
2.
FLASHCARD QUESTION
Front
What is a compound?
Back
A compound is a substance formed when two or more elements are chemically bonded together. Examples include water (H2O) and carbon dioxide (CO2).
3.
FLASHCARD QUESTION
Front
What is the chemical symbol for oxygen?
Back
O
4.
FLASHCARD QUESTION
Front
What is the chemical symbol for sodium?
Back
Na
5.
FLASHCARD QUESTION
Front
What is the difference between an element and a compound?
Back
An element is a single type of atom, while a compound consists of two or more different types of atoms chemically bonded together.
6.
FLASHCARD QUESTION
Front
Can compounds be broken down into simpler substances?
Back
Yes, compounds can be broken down into their constituent elements through chemical reactions.
7.
FLASHCARD QUESTION
Front
What is a mixture?
Back
A mixture is a combination of two or more substances that are not chemically bonded. Examples include air and salad.
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