Negatively charged subatomic particles.
Chemistry - Chapter 4 Vocab (Pearson)

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Chemistry
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10th - 12th Grade
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Hard
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1.
FLASHCARD QUESTION
Front
Back
Electrons are negatively charged subatomic particles that orbit the nucleus of an atom.
2.
FLASHCARD QUESTION
Front
Subatomic particles with no charge.
Back
Neutrons are subatomic particles found in the nucleus of an atom and have no electric charge.
3.
FLASHCARD QUESTION
Front
A glowing beam that traveled from the cathode to the anode.
Back
A cathode ray is a stream of electrons observed in vacuum tubes.
4.
FLASHCARD QUESTION
Front
The total number of protons and neutrons in an element.
Back
Mass number is the sum of protons and neutrons in the nucleus of an atom.
5.
FLASHCARD QUESTION
Front
Atoms that have the same number of protons but different numbers of neutrons.
Back
Isotopes are variants of a particular chemical element that differ in neutron number.
6.
FLASHCARD QUESTION
Front
The center of an atom, containing protons and neutrons.
Back
The nucleus is the dense central core of an atom.
7.
FLASHCARD QUESTION
Front
The number of protons in the nucleus of an atom.
Back
Atomic number defines the identity of an element and determines its position in the periodic table.
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