Elements, Compounds, and Reactions
Flashcard
•
Chemistry
•
8th Grade
•
Practice Problem
•
Hard
ada zavala
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19 questions
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1.
FLASHCARD QUESTION
Front
What is an element?
Back
The simplest form of matter.
2.
FLASHCARD QUESTION
Front
What are the main elements found in the human body?
Back
Carbon, hydrogen, oxygen, sulfur, nitrogen, phosphorus, and about a dozen other elements.
3.
FLASHCARD QUESTION
Front
What is an atom?
Back
The smallest particle of an element that keeps the chemical identity of the element.
4.
FLASHCARD QUESTION
Front
How are carbon atoms different from hydrogen and oxygen atoms?
Back
Each element has a unique type of atom; carbon atoms are different from hydrogen and oxygen atoms.
5.
FLASHCARD QUESTION
Front
What is a compound?
Back
A substance that contains two or more different elements that are chemically joined.
6.
FLASHCARD QUESTION
Front
Give an example of a compound.
Back
Water, which is made from hydrogen and oxygen.
7.
FLASHCARD QUESTION
Front
What is a molecule?
Back
A group of two or more atoms joined together chemically.
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