Biology

Front 1

Homeostases

Back 1

maintaince of steady internal state

Front 2

Evolve

Back 2

changing of a species over time

Front 3

Matter

Back 3

anything that has mass and takes up space

Front 4

Elements

Back 4

pure substances

Front 5

Compounds

Back 5

a substance made up two or more pure substances

Front 6

Atom

Back 6

smallest unit of matter

Front 7

Proton

Back 7

found in the neuclus; has a positve charge

Front 8

Neutron

Back 8

found in the neuclus; has a neutral charge

Front 9

Electron

Back 9

found obiting the neuclus; has a negative charge

Front 10

Atomic number

Back 10

number of protons in the atom of a specific element

Front 11

Mass number

Back 11

the sum of the protons and neutrons in an atom

Front 12

Isotope

Back 12

atoms with varying numbers of neutrons

Front 13

Energy

Back 13

the ablity to do work

Front 14

Potential energy

Back 14

energy due to position

Front 15

Valence shell

Back 15

atoms in the outermost electron shell

Front 16

Valence electrons

Back 16

electrons in the outermost shell

Front 17

Covalent bond

Back 17

a bond in which a pair of electrons are being shared

Front 18

Single bond

Back 18

one pair of shared electrons

Front 19

Double bond

Back 19

two pairs of shared electrons

Front 20

Nonpolar covalent bond

Back 20

a bond in which the electrons are shared equally by the atoms

Front 21

Polar covalent bond

Back 21

a bond in which the shared electon pair is unevenly shared resulting in a partial charge

Front 22

Electronegative

Back 22

the ablity to attract electrons

Front 23

Ionic bond

Back 23

a bond which results in the taking of an electron by an atom

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Ions

Back 24

charged atoms

Front 25

Cation

Back 25

positivly charged ion

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Anion

Back 26

negativly charge ion

Front 27

hydrogen bond

Back 27

weak chemical bonds easily broken

Front 28

Cohesion

Back 28

the ablity to stick to other water molecules

Front 29

Adhesion

Back 29

the ablity to stick to other molecules

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Solvent

Back 30

dissolving agent

Front 31

Solute

Back 31

whats being dissolved

Front 32

Solution

Back 32

a mixture of the solute and the solvent

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Hydrophobic

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will not dissolve in water; means water fearing

Front 34

Hydrophelic

Back 34

will dissolve in water; means water loving

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Neutral

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neither an acid nor a base

Front 36

Acid

Back 36

yields hydrogen ions

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Base

Back 37

accepts hydrogen ions

Front 38

Acidic solution

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has high amounts of H+ but low amouts of -OH ions

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Basic solution

Back 39

has high amounts of -OH ions but low amounts of H+ ions

Front 40

Buffers

Back 40

minimize changes in pH

Front 41

Hydrocarbon

Back 41

a molcule that is made up of only hydrogen and carbon atoms; hydrophobic

Front 42

Linear molecule

Back 42

a molecule in a straight line

Front 43

Cyclic molecule

Back 43

a molecule in a circle

Front 44

Isomers

Back 44

molecules with the same chemical equation but different structal arrangment

Front 45

Macromolecule

Back 45

large molecules

Front 46

Polymers

Back 46

made out of many monomers

Front 47

Monomer

Back 47

single molecule?

Front 48

Condensation reaction

Back 48

it's what bonds monomers together; results in the loss of a water molecule during the formation of one linkage

Front 49

Hydrolysis reaction

Back 49

breaks down polomers; results in the formation of a water molecule

Front 50

Enzymes

Back 50

a special class of protien that makes biological reactions occur in cells

Front 51

Monosaccharide

Back 51

simple sugars that usually tastes sweet; water soluble