Atoms, Isotopes, and Ions

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21 Terms

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negative ion

When an atom gains an electron, it becomes a _______________ ion.

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atom

Smallest particle of an element that retains the element's properties

<p>Smallest particle of an element that retains the element's properties</p>
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proton

A positively charged particle located in the nucleus of an atom

<p>A positively charged particle located in the nucleus of an atom</p>
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neutron

A small particle in the nucleus of the atom, with no electrical charge

<p>A small particle in the nucleus of the atom, with no electrical charge</p>
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electron

A tiny, negatively charged particle that moves around the nucleus of an atom.

<p>A tiny, negatively charged particle that moves around the nucleus of an atom.</p>
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ion

Charged particles that are formed when an atom loses or gains (an) electron(s).

<p>Charged particles that are formed when an atom loses or gains (an) electron(s).</p>
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isotope

Atoms of the same element with the same number of protons (atomic number) but a different atomic mass (number of neutrons).

<p>Atoms of the same element with the same number of protons (atomic number) but a different atomic mass (number of neutrons).</p>
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atomic number

Number of protons in an atom

<p>Number of protons in an atom</p>
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atomic mass

The average number of protons and neutrons in the nucleus (usually an decimal)

<p>The average number of protons and neutrons in the nucleus (usually an decimal)</p>
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Cation

Positive Ion

<p>Positive Ion</p>
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Anion

Negative Ion

<p>Negative Ion</p>
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Mass number

the sum of the number of neutrons and protons in an atomic nucleus (whole number)

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electron cloud

a region around the nucleus of an atom where electrons are likely to be found

<p>a region around the nucleus of an atom where electrons are likely to be found</p>
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Mass - atomic number (protons) = number of neutrons

How do you determine the number of neutrons in an atom?

<p>How do you determine the number of neutrons in an atom?</p>
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Protons (1amu) + Neutrons (1amu)

What TWO parts of the atom contributes to the mass?

<p>What TWO parts of the atom contributes to the mass?</p>
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positive ion

When an atom loses a valence electron, it becomes a __________________ion.

<p>When an atom loses a valence electron, it becomes a __________________ion.</p>
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Because it lost an electron

Why does a potassium ion have a charge of +1

<p>Why does a potassium ion have a charge of +1</p>
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Because it gained an electron

Why does a bromine ion has a charge of -1?

<p>Why does a bromine ion has a charge of -1?</p>
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Carbon-12 and Carbon-13 are isotopes of each other. Carbon-13 has one more neutron than carbon-12

Why does carbon-12 have a mass of 12 and carbon-13 have a mass of 13?

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8 neutrons

If Oxygen has 8 protons and has a mass of 16, how many neutrons does oxygen contain?

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9 neutrons

If Oxygen-17 has 8 protons and a mass of 17, how many neutrons does Oxygen-17 contain.