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AP Chemistry > Atomic structure > Flashcards

Atomic structure Flashcards

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1
Q

Light

A

Electromagnetic radiation, a wave of oscillating electric and magnetic fields

Stream of particles called photons

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2
Q

Speed of light

A

3.00 x 10^8 m/s

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3
Q

Characteristic pattern of wavelengths absorbed or emitted by a substance

A

Spectrum

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4
Q

Emission spectrum

A

Spontaneous emission of radiation from an excited atom or molecule

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5
Q

Line spectrum

A

Spectrum containing only certain wavelengths

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6
Q

Photon

A

Quantum of energy

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7
Q

Plancks constant

A

6.63 x 10^-34 Jxs

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8
Q

Form of matter that has a definite composition and distinct properties, can be either elements or compounds

A

Substance

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9
Q

States of matter

A

Solid
Liquid
Gas

Can be interconverted without changing the chemical composition of the compound.

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10
Q

Substance that cannot be separated into simpler substances by chemical means

A

Element

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11
Q

A substance composed of atoms of two or more elements chemically united in fixed proportions

A

Compound

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12
Q

Combination of two or more substances in which they retain their distinct identities

A

Mixture

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13
Q

Measure if the amount of matter in an object or sample

A

Mass

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14
Q

Average kinetic energy of an object

A

Temperature

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15
Q

The ratio of mass to volume

m/v

A

Density

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16
Q

After this the original substance will not exist, what remains is a different substance

A

Chemical change

17
Q

State of matter changes but not the identity of the substance

A

Physical change

18
Q

Measured and expressed with a number

A

Quantitative

19
Q

Not requiring explicit measurement

A

Qualitative

20
Q

Depends on the amount of matter

A

Extensive property

21
Q

Does not depend on the amount of matter

A

Intensive property

22
Q

How close a measurement is to the true or experimental value

A

Accuracy

23
Q

Tells us how close multiple measurements are to one another

A

Precision

24
Q

Fraction in which the same quantity is expressed one way in the denominator and another way in the numerator

A

Conversion factor

25
Q

The study of matter and the changes that matter undergoes

A

Chemistry

26
Q

If two elements can combine to form more than one compound with each other, the masses of one element that combined with a fixed mass of the other element are in ratios of small whole numbers

A

Law of definite proportions

27
Q

Matter can be neither created nor destroyed

A

Law of conservation of mass

28
Q

Spontaneous emission of energy from the nucleus of an emission

A

Radioactivity

29
Q

Negatively searched particles inside the atom

A

Electrons

30
Q

Basic unit of an element that can enter into a chemical combination

A

Atom

31
Q

The emission of energy

A

Radiation

AP Chemistry (1 decks)

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