5.4 Atoms flashcards

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Last updated 12:16 PM on 6/13/26
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15 Terms

1
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Atom

The simplest part of an element that still has its properties.

<p>The simplest part of an element that still has its properties.</p>
2
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Element

A simple substance made of only one kind of atom.

<p>A simple substance made of only one kind of atom.</p>
3
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Molecule

A group of atoms bonded together.

<p>A group of atoms bonded together.</p>
4
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Proton

A subatomic particle with a positive charge.

<p>A subatomic particle with a positive charge.</p>
5
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Neutron

A subatomic particle with no charge.

<p>A subatomic particle with no charge.</p>
6
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Electron

A subatomic particle with a negative charge that moves around the nucleus of an atom.

<p>A subatomic particle with a negative charge that moves around the nucleus of an atom.</p>
7
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John Dalton

Proposed the first atomic theory in 1804, considered the father of chemistry.

<p>Proposed the first atomic theory in 1804, considered the father of chemistry.</p>
8
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All ___________ is made from atoms.

matter

<p>matter</p>
9
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How many natural elements are there?

92

<p>92</p>
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Can atoms be seen with your eyes or even with a microscope?

no

<p>no</p>
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Most matter is not made of pure

elements

<p>elements</p>
12
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Elements have __________________ of protons, neutrons, and electrons

amounts

<p>amounts</p>
13
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Which particle is not in the nucleus?

electron

<p>electron</p>
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Which particle are in the nucleus?

proton and neutron

<p>proton and neutron</p>
15
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How many atoms of each element are in H-2-0 (water)

Two hydrogen and one oxygen

<p>Two hydrogen and one oxygen</p>