What is the basic unit of matter?
Atoms, Molecules, and Compounds

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Chemistry
•
6th - 8th Grade
•
Hard
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1.
FLASHCARD QUESTION
Front
Back
An atom.
2.
FLASHCARD QUESTION
Front
What are molecules made of?
Back
Molecules are made of two or more atoms bonded together.
3.
FLASHCARD QUESTION
Front
What is a compound?
Back
A compound is a substance formed when two or more different elements are chemically bonded together.
4.
FLASHCARD QUESTION
Front
How many atoms are in a molecule of water (H2O)?
Back
3 atoms (2 hydrogen atoms and 1 oxygen atom).
5.
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.
6.
FLASHCARD QUESTION
Front
What is a diatomic molecule?
Back
A molecule that consists of two atoms of the same or different elements, such as O2 or CO.
7.
FLASHCARD QUESTION
Front
What is the chemical formula for carbon dioxide?
Back
CO2.
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