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organic bio chem 1 > Exam 1 > Flashcards

Exam 1 Flashcards

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1
Q

Atom

A

The smallest unit of division for matter

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2
Q

Atomic number

A

Number of protons in nucleus

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3
Q

Atomic weight

A

Average mass of atom (amu)

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4
Q

Barometer

A

Measures atmospheric pressure

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5
Q

Bohr

A

Around a positive nucleus, electrons can change orbitals only by absorbing or releasing energy

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6
Q

Boiling point

A

The temp at which vapor pressure of a liquid is equal to the atmospheric pressure

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7
Q

Chemical

A

Substances studied in chemistry

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8
Q

Chemistry

A

Identification and study of substances and matter

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9
Q

Compound

A

A pure substance consisting of two or more types of atoms

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10
Q

Dalton

A

Atomic theory - all matter is composed of atoms (smallest) - all atoms of the same element have the same chemical properties - atoms of two different elements can combine to form a new substance

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11
Q

Density

A

Mass/volume

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12
Q

Diatomic

A

Molecules containing 2 atoms

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13
Q

Electron

A

Subatomic particle with a negative charge

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14
Q

Element

A

(Homo) pure one kind of atom 👩‍❤️‍👩

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15
Q

Family

A

AKA group

Vertical column of elements with similar properties

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16
Q

Formula weight

A

Labeled amu

Sum of atomic weights of atoms in a compound

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17
Q

Heteroatomic

A

Molecules consisting of two or more types of atoms

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18
Q

Heterogeneous

A

Matter with properties not uniform throughout substance

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19
Q

Homogeneous

A

Same properties throughout sample of matter

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20
Q

Hypothesis

A

Proposed statement without actual proof to explain facts

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21
Q

Ionization

A

Energy required to remove an electron

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22
Q

Isotope

A

Same atomic number/same element

New mass number/different amount of neutrons

23
Q

Kelvin

A

SI base unit of temperature

24
Q

Kilogram

A

SI base unit of mass

25
Q

Liter

A

SI base unit of volume

26
Q

Mass

A

Measure of the amount of matter in an object

27
Q

Metal

A

Left 2/3 of periodic table

28
Q

Fundamental unit of length in metric system

A

Meter

29
Q

Determined charge of the electron

A

Millikan

30
Q

Physical blend of matter can be separated

A

Mixture

31
Q

Relating to molecules

A

Molecular

32
Q

Smallest particle of a pure substance

A

Molecule

33
Q

Subatomic particle with neutral charge

A

Neutron

34
Q

Right 1/3 of periodic table

A

Nonmetal

35
Q

Center of atoms
Contains protons and neutrons
Is most of an atom’s mass

A

Nucleus

36
Q

Horizontal row of elements

A

Period

37
Q

Observed without changing the composition of matter

A

Physical

38
Q

Subatomic particle

Positive charge

A

Proton

39
Q

Concentration of an atoms mass @ nucleus

A

Rutherford

40
Q

Second

A

SI unit of time

41
Q

Solution

A

Homogeneous mixture of 2 or more substances

42
Q

Thomson

A

Cathode ray tube
Plum pudding model
Positive and negative charges

43
Q

Valence

A

Highest energy level

44
Q

Weight

A

Measure of gravitational force acting on an object

45
Q

Electron affinity

A

Attraction of atom or an additional electron

46
Q

First ionization

A

Energy needed to remove most loosely held electron

47
Q

When they have a ________ ions have a stable, filled outer electron level.

A

Noble gas configuration

48
Q

Shielding effect

A

Increased distance of the outer electrons from the nucleus

Ionization decreases going down a column

49
Q

Low ionization is a characteristic of…

A

Metals

50
Q

Ionization energy does what across periods??

A

Increase

51
Q

High ionization…

A

Nonmetals and noble gases

52
Q

The attraction of atoms for a shared electron

A

Electronegativity

53
Q

The distance from the nucleus to the outermost electron

A

Atomic radius

organic bio chem 1 (5 decks)

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