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Bio 110 > Chapter 2 > Flashcards

Chapter 2 Flashcards

1
Q

Adhesion

A

Water Sticking to Other surfaces

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2
Q

Anion

A

Negatively Charged Ion

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3
Q

Atom

A

Smallest Chemical Unit of a Pure Substance

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4
Q

Atomic Number

A

Number of Protons in an atom

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5
Q

Atomic Weight

A

Average Weight of an all of an elements Isotopes

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6
Q

Avogadro’s Number

A

Number of Molecules in 1 mole of an given substance, 6.02x10 to the 23

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7
Q

cation

A

Positively Charged Ion

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8
Q

chemical bond

A

Attractive forces that link atoms together

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9
Q

chemical reaction

A

Occur when atoms collide with enough force to change their bonding partners

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10
Q

cohesion

A

Water Sticking to itself

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11
Q

compound

A

molecule with two or more elements

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12
Q

electron

A

subatomic particle that carries a negative charge

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13
Q

Covalent Bond

A

Sharing of electrons between atoms to fill valance shell

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14
Q

electron shell

A

Energy level, made up of orbitals

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15
Q

electronegativity

A

Attractive force that an atomic nucleus exerts on electrons

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16
Q

energy

A

Ability to do work or change

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17
Q

element

A

a pure substance containing one type of atom

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18
Q

heat of vaporization

A

heat required to induce a liquid to gas phase change

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19
Q

hydrophobic

A

Water Hating/Fearing

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20
Q

hydrogen bond

A

The attraction between the slight negative end of a molecule and slight positive end of a hydrogen end of another molecule

20
Q

hydrocarbon

A

Chemical class that contain only hydrogen and carbon atoms

21
Q

hydrophilic

A

Water Loving

21
Q

ion

A

Charged particle

21
Q

isotope

A

Variations of a given element, isotopes have the same proton count but different neutron count

22
Q

ionic attraction

A

atoms with such difference in electronegativities than one another, that one will lose and gain an electron respectively, filling out the valence shells

23
Q

mass

A

measure of matter

24
Q

mass number

A

Protons + neutrons

25
Q

mole

A

Amount of a substance numerically equal to its molecular weight

26
Q

molecular weight

A

Sum of atomic weights in a molecule

27
Q

molecule

A

Stable association of atoms

28
Q

neutron

A

subatomic particle carrying a charge of 0, or neutral

29
Q

non-polar covalent bond

A

Relative even sharing of electrons

30
Q

nucleus

A

Center of an atom

31
Q

orbital

A

where the electron is located 90% of the time, each one holds 2 electrons

32
Q

Reduction

A

Gaining of electrons

33
Q

Oxidation

A

Lose of electrons

34
Q

Periodic Table

A

The way elements are categorized

35
Q

Polar Covalent Bond

A

Relative uneven sharing of electrons

35
Q

Radioactive Decay

A

can transform the atom via ionizing radiation

36
Q

products

A

things formed during chemical reaction

37
Q

proton

A

subatomic particle with positive charge

38
Q

Radioisotope

A

isotopes that give off energy in the form of alpha, beta, and delta radiation from the nuclues

39
Q

Reactant

A

The things initially present before a chemical reaction occurs

40
Q

Solute

A

The substance that is dissolved

41
Q

Solution

A

A substance dissolved in liquid

41
Q

Solvent

A

Liquid in which a substance is dissolved

42
Q

Van Der Waals Forces

A

Attractions between nonpolar molecules that are close together

43
Q

Valence Shell

A

Outermost shell of an atom

Bio 110 (11 decks)

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