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Chemistry Unit 1, 2, 3 > Chemistry I > Flashcards

Chemistry I Flashcards

1
Q

Gas

A

No fixed volume or shape
Conforms to the volume and shape of its container
Compressible

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2
Q

Liquid

A

Has a fixed volume but no fixed shape
Conforms to the shape of its container

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3
Q

Solid

A

Has a fixed volume and shape

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4
Q

Elements

A

substances that can NOT be decomposed into simpler substances by chemical means

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5
Q

Compounds

A

composed of two or more elements can be decomposed by chemical means

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6
Q

Diatomic Molecules

A

Elements which exist naturally as a combination of two atoms
ex.) H2, N2, O2, F2, Cl2, Br2, I2
Horses Need Oats For Clear Brown I’s

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7
Q

Compounds

A

combination of two or more elements

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8
Q

Intensive Properties

A

characteristics of substances whose values do NOT depend on the amount of material chosen

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9
Q

Extensive Properties

A

characteristics of substances whose values DO depend on the amount of material chosen

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10
Q

Mixtures

A

combination of two or more substances in which each substance retains its own chemical identity and properties
ex.) homogenous mixtures, heterogenous mixtures

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11
Q

Methods of Separating Mixtures

A

Filtration, Distillation, chromatography

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12
Q

Volume

A

1ml= 1cc= 1cm^3

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13
Q

Density

A

mass/volume

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14
Q

Precision

A

measure of how closely individual measurements agree with one another

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15
Q

Accuracy

A

how closely individuals measurements agree with the correct or “true” value

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16
Q

C degrees

A

=5/9 (F-32)

17
Q

F degrees

A

= 9/5(C)+32

18
Q

Kelvin

A

=C+273

19
Q

Who is Rutherford?

A

Gold Foil Experiment, discovered protons and the nucleus is positively charged
The Nuclear Model
Proposed the neutron in the nucleus, no charge and a mass of 1 amu

20
Q

Who is Thomson?

A

Created the cathode rays; discovered electrons and its negative charge
Plum Pudding Atom

21
Q

What is the Millikan’s Oil Drop?

A

an experiment by Millikan that showed that the particle did have the same amount of charge as the hydrogen ion

22
Q

Average Atomic Mass

A

AAM= (mass of isotope) (abundance of isotope)

23
Q

Ionic Compound

A

composed of metals and nonmetals

24
Q

Molecular (covalent) compounds

A

composed of ONLY nonmetals

Chemistry Unit 1, 2, 3 (1 decks)

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