Atom structure

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Chemistry

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10 Terms

1
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What is an atom?

An atom is the smallest unit of matter that retains the properties of an element.

2
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What are the main parts of an atom?

The main parts of an atom are protons, neutrons, and electrons.

3
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What charge do protons have?

Protons have a positive charge.

4
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What charge do electrons have?

Electrons have a negative charge.

5
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Where are neutrons located in an atom?

Neutrons are located in the nucleus of an atom.

6
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What is the nucleus of an atom?

The nucleus is the central part of an atom, consisting of protons and neutrons.

7
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What determines the atomic number of an element?

The atomic number of an element is determined by the number of protons in the nucleus.

8
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What are electrons arranged in?

Electrons are arranged in energy levels or shells around the nucleus.

9
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What is the mass of a proton compared to an electron?

A proton has a mass approximately 1,836 times greater than that of an electron.

10
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What role do neutrons play in an atom?

Neutrons contribute to the mass of the atom and help stabilize the nucleus.