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General Chemistry 1 > Chapter 2 > Flashcards

Chapter 2 Flashcards

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1
Q

Alpha particle

A

Positively charged particle consisting of two protons and two neutrons

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2
Q

Anion

A

Negatively charged atom or molecule(contains more elections than protons)

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3
Q

Atomic mass

A

Average mass of atoms of an element (amu)

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4
Q

Amu

A

Atomic mass unit

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5
Q

(Z)

A

Atomic number

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6
Q

Atomic number

A

Number of protons in the nucleus of an atom

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7
Q

Cation

A

Positively charged atom or molecule (contains fewer elections than protons)

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8
Q

Dalton (da)

A

Alternative unit equivalent to the atomic mass unit

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9
Q

Dalton’s atomic theory

A

Set of postulates that established the fundamental properties of atoms

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10
Q

Empirical formula

A

Formula showing the composition of a compound given as the simplest whole-number ratio of atoms

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11
Q

Ion

A

Electrically charged atom of a molecule

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12
Q

Isotopes

A

Atoms that contain the same number of protons but different numbers of neutrons

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13
Q

Law of constant composition

A

All samples of a puce compound contain the same elements in the same proportions by mass

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14
Q

Law of definite proportions

A

All samples ofa puce compound contain the same elements in the same proportions by mass

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15
Q

(A)

A

Mass number

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16
Q

Mass number

A

Sum of the numbers of neutrons and protons in the nucleus of an atom

17
Q

Molecular formula

A

Indicates the composition of a molecule of a compound and giving the actual number of atoms of each element

18
Q

Neutron

A

Uncharged, subatomic particle located in the nucleus

19
Q

Nucleus

A

Massive, positively charged center of an atom made up of protons and neutrons

20
Q

Proton

A

Positively charged, subatomic particle located in the nucleus

21
Q

(U)

A

Unified atomic mass unit

22
Q

Unified atomic mass unit

A

Alternative unit equivalent to the amu

23
Q

Structural formula

A

Shows the atoms in a molecule and how they are connected

General Chemistry 1 (3 decks)

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