What is an atom?
Atoms and Elements

Flashcard
•
Science
•
7th Grade
•
Hard
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1.
FLASHCARD QUESTION
Front
Back
An atom is the smallest unit of matter that retains the properties of an element.
2.
FLASHCARD QUESTION
Front
What are the three main parts of an atom?
Back
Protons, neutrons, and electrons.
3.
FLASHCARD QUESTION
Front
What charge does a proton have?
Back
A proton has a positive charge.
4.
FLASHCARD QUESTION
Front
What charge does an electron have?
Back
An electron has a negative charge.
5.
FLASHCARD QUESTION
Front
What charge does a neutron have?
Back
A neutron has no charge.
6.
FLASHCARD QUESTION
Front
What is the nucleus of an atom?
Back
The nucleus is the central part of an atom, containing protons and neutrons.
7.
FLASHCARD QUESTION
Front
What determines the atomic number of an element?
Back
The atomic number is determined by the number of protons in the nucleus.
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