What is the center of an atom where most of its mass and positive charge is concentrated?
Atoms Vocabulary Flashcard

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Chemistry
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6th - 8th Grade
•
Hard
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1.
FLASHCARD QUESTION
Front
Back
The nucleus.
2.
FLASHCARD QUESTION
Front
What do you call a substance that consists of only one type of atom?
Back
An element.
3.
FLASHCARD QUESTION
Front
What is formed when two or more atoms are held together by covalent bonds and act as a unit?
Back
A molecule.
4.
FLASHCARD QUESTION
Front
What is the name of the negatively charged particle that occupies the space in an atom outside the nucleus?
Back
An electron.
5.
FLASHCARD QUESTION
Front
What type of charged particle is a proton?
Back
Positively charged.
6.
FLASHCARD QUESTION
Front
What is the smallest unit of an element that retains the properties of that element?
Back
An atom.
7.
FLASHCARD QUESTION
Front
What is a substance made of two or more different types of atoms bonded together?
Back
A compound.
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