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Matter Keywords

Flashcard
•
Chemistry
•
7th Grade
•
Hard

Henny van Vuuren
FREE Resource
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46 questions
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1.
FLASHCARD QUESTION
Front
Back
The smallest unit of an element that retains the properties of that element. It consists of a nucleus surrounded by electrons.
2.
FLASHCARD QUESTION
Front
Particle
Back
A small portion of matter. Particles can be subatomic, such as protons, neutrons, and electrons.
3.
FLASHCARD QUESTION
Front
Proton
Back
A positively charged subatomic particle found in the nucleus of an atom. It determines the atomic number of an element.
4.
FLASHCARD QUESTION
Front
Electron
Back
A negatively charged subatomic particle that orbits the nucleus of an atom. Electrons are involved in chemical bonding and electricity.
5.
FLASHCARD QUESTION
Front
Neutron
Back
A subatomic particle with no electric charge, found in the nucleus of an atom. Neutrons contribute to the mass of an atom and provide stability to the nucleus.
6.
FLASHCARD QUESTION
Front
Mass number
Back
The total number of protons and neutrons in the nucleus of an atom.
7.
FLASHCARD QUESTION
Front
Atomic Number
Back
The number of protons in the nucleus of an atom, which defines the element.
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