Bsc Chapter 1-3

Front 1

substance consisting of 2 or more elements combined in a fixed ratio

Back 1

compound

Front 2

neutural particals in the nucleus of an atom

Back 2

neutrons

Hint 2

look at the name "neu"

Front 3

positive partical in nucleus of atom

Back 3

proton

Hint 3

pro=pos

Front 4

required by an organism only in minute quantities

Back 4

trace elements

Hint 4

think small "trace"

Front 5

smallest unit of matter that still retains the properties of an element

Back 5

atom

Hint 5

small like an ant

Front 6

substance that cannot be broken down into other substances by chemical reactions

Back 6

an element

Hint 6

its elementary

Front 7

negatively charged particals which orbit the nucleus

Back 7

electrons

Hint 7

its moving- its electric

Front 8

subatomic measuring unit

Back 8

dalton

Hint 8

named for man credited with developing the atomic theory

Front 9

the number of protons, which is unique to each element

Back 9

atomic number

Front 10

number sum of protons plus + neutrons

Back 10

mass number

Front 11

atom with differing number of neutron

Back 11

isotope

Front 12

isotope which is unstable in which nucleus decays spontaneously, giving off particals of energy

Back 12

radioactive isotope

Front 13

ability to do work

Back 13

energy

Front 14

energy that matter stores because of its position or location

Back 14

potential energy

Front 15

farthest electron shell

Back 15

valence shell

Front 16

three dimentional space where the electron is located

Back 16

orbit

Front 17

bonds in which atoms complete their valence shell

Back 17

chemical bonds

Front 18

chemical bond in which a pair of valence electrons are shared by two atoms

Back 18

covalent bonds

Front 19

2 or more atoms held together by a covalent bond

Back 19

molecule

Front 20

bond in which atoms share 2 pairs of valence electrons

Back 20

double covalent bonds

Front 21

the attraction of an atom for the electrons of a covalent bond

Back 21

electronegativity

Front 22

covalent bond in which electrons are shared equally

Back 22

nonpolar covalent bond

Front 23

covalent bond in which electrons are shared unequally

Back 23

polar covalent bond

Front 24

a charged atom, negatively or positively

Back 24

ion

Front 25

positively charged ion

Back 25

cation

Hint 25

rubbing two cats together

Front 26

negatively charged ion

Back 26

anion

Front 27

bonds between oppositely charged ions

Back 27

ionic bond

Front 28

compounds formed by ionic bonds

Back 28

salt

Front 29

bond formed when a hydrogen atom, covalently bonded to 1 electronegative atom, is also attracted to another electronegative atom

Back 29

hydrogen bond

Front 30

making and breaking of chemical bonds, leading to changes in the composition of matter

Back 30

chemical reaction

Front 31

starting materials in chemical reactions

Back 31

reactants

Front 32

creations of chemical reactions

Back 32

products

Front 33

type of chemical reaction in which 2 or more reactants form 1 product

Back 33

combination

Front 34

type of chemical reaction in which 1 reactant forms 2 or more products

Back 34

decomposition

Front 35

chemical reaction in which nonmetals or their compounds react with oxygen to produce their oxide and release heat energy

Back 35

combustion

Front 36

chemical reaction in which 1 element replaces another in a compound

Back 36

replacement

Front 37

hydrogen bonds holding water together

Back 37

cohesion

Front 38

clinging of one substance to another

Back 38

adhesion

Front 39

measure of the intensity of heat due to the average kinetic energy of molecules

Back 39

temperature

Front 40

amount of energy that must be absorbed for 1 g of substance to raise temp by 1 degree celcius

Back 40

specific heat

Front 41

quantity of heat that must be absorbed in order for 1 g of a substance to turn from liquid to vapor

Back 41

heat of vaporization

Front 42

a liquid that is a completely homogeneous mixture of 2 or more substances

Back 42

solution

Front 43

disolving agent

Back 43

solvent

Front 44

substance that is disolved

Back 44

solute

Front 45

solution in which water is the solvent

Back 45

aqueous solution

Front 46

the sphere of water molecules around each dissolved ions

Back 46

hydration cell

Front 47

substance with an afinity for water

Back 47

hydrophilic

Front 48

substances that repel water

Back 48

hydrophobic

Front 49

molecular weight expressed in grams

Back 49

moles

Front 50

sum weight of all atoms in a molecule

Back 50

molecular weight

Front 51

number of mols of solute per liter of solution

Back 51

molarity

Front 52

substances that increase hydrogen ion concentration of a substance

Back 52

acid

Front 53

substance that reduces the concentration of hydrogen ions in a solution

Back 53

base

Front 54

levels of biological organization

Back 54

kingdom, phylum, class, order, family, genus, species

Front 55

5 kingdoms

Back 55

animalia, fungi, plantae, protista, monera