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Rad100 > Chpt 3 > Flashcards

Chpt 3 Flashcards

1
Q

Material that has a definite and consistent composition

A

Substance

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2
Q

A mixture of substances

A

Matter

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3
Q

Material that has a definite and consistent composition

A

Substance

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4
Q

Two or more substances combined

A

Mixture

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5
Q

(T/F) Substances are either elements (simple) or compounds (complex)

A

True

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6
Q

What cannot be broken down into any simpler substance

A

Element

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7
Q

Smallest unit if an element

A

Atom

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8
Q

Two or more chemically combined elements

A

Compound

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9
Q

Smallest unit of a compound

A

Molecule

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10
Q

Three fundamental particles of an atom

A

Electron
Proton
Neutron

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11
Q

Formula to calculate number of electrons per shell

A

2n^2

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12
Q

Mass of protons and neutrons

A

1.68 x 10^-27

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13
Q

Mass of electrons

A

9.1 x 10^-31

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14
Q

Amount of energy needed to eject an electron from its orbit

A

Binding energy

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15
Q

What kind of atom has the same number of protons and electrons

A

Neutral atom

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16
Q

When an atom gains or loses an electron it’s called what?

A

Ion

17
Q

When an atom GAINS one or more electrons it has what?

A

A negative charge
Anion

18
Q

When an atom LOSES one or more electrons it has what?

A

Positive charge
Cation

19
Q

The atomic number is equal to what?

A

Number of protons

20
Q

The atomic mass is equal to what?

A

Number of protons and neutrons

21
Q

Atom that has gained or lost neutrons from its natural state

A

Isotope

22
Q

What can produce gamma radiation when they decay?

A

Isotopes

23
Q

Number of electrons in an atoms outer most shell that determines its ability to bind with other atoms

A

Valence

24
Q

When one or more electrons move from one atom to the other and the resultant ions attract each other

A

Ionic bond

25
Q

When two atoms share electrons

A

Covalent bond

26
Q

Isotope = same?
Isobar = same?
Isotone = same?
Isomer = same?

A

Proton
Atomic mass
Neutron
Metastable

Rad100 (10 decks)

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