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MCAT Prep > General Chemistry > Flashcards

General Chemistry Flashcards

1
Q

What are the three subatomic particles that we must understand?

A

Protons, neutrons, and electrons

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2
Q

Where are protons found in an atom?

A

Nucleus

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3
Q

What is the mass of one proton?

A

1 amu

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4
Q

What is the symbol for the atomic number?

A

Z

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5
Q

How many protons does oxygen have?

A

8

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6
Q

What is the charge of neutrons?

A

No charge

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7
Q

What is the symbol for mass number?

A

A

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8
Q

Atoms that share an atomic number but have different mass numbers are known as?

A

Isotopes

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9
Q

_____ move through the space surrounding the nucleus and are associated with varying levels of energy.

A

Electrons

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10
Q

The mass of an electron is approximately _____ that of a proton.

A

1/2000

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11
Q

If an electron is closer to the nucleus, are they high energy or low energy?

A

Low energy

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12
Q

What are valence electrons?

A

Electrons of the outermost shell

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13
Q

What determines the reactivity of an atom?

A

Valence electrons

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14
Q

What is a positively charged ion called?

A

CationW

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15
Q

What is a negatively charged ion called?

A

Anion

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16
Q

What are the three symbols for protons?

A
  • p
  • p+
  • 1/1H
17
Q

What are the three symbols for neutrons?

A
  • n0
  • 1/0n
18
Q

What are the three symbols for electrons?

A
  • e-
  • 0/1e
19
Q

What is the relative mass for protons, neutrons, and electrons?

A

Protons: 1
Neutrons: 1
Electrons: 0

20
Q

What are the locations of electrons, protons, neutrons?

A

Electrons: orbitals
Protons: nucleus
Neutrons: nucleus

21
Q

Which subatomic particle is responsible for determining each of the following properties of an atom?

Charge:
Atomic #:
Isotope:

A

Charge: Electrons
Atomic #: Protons
Isotope: Neutrons

22
Q

In nuclear medicine, isotopes are created and used for various purposes; for instance, 18O is created from 18F. Determine the number of protons, neutrons, and electrons in each of these species.

A

18O:
- protons: 8
- neutrons: 10
- electrons: 8

18F:
- protons: 9
- neutrons: 9
- electrons: 9

23
Q
A

MCAT Prep (2 decks)

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