chem final

Question 1

density

Answer 1

the quantity per unit volume, area, or length. mass over volume

Question 2

metric system

Answer 2

weights and measures in which the meter is the unit of length and kilogram is weight

Question 3

scientific notation

Answer 3

a way of writing large or small numbers

Question 4

hypothesis

Answer 4

a guess on what will happen

Question 5

theory

Answer 5

principles of explaination or proposed explanation that needs experimentation

Question 6

chemical

Answer 6

any compound with a defined comp

Question 7

matter

Answer 7

a physical substance that occupies space

Question 8

atom

Answer 8

a particle of matter that defines a element

Question 9

compound

Answer 9

a thing that is composed of two separate elements

Question 10

physical prop

Answer 10

characteristic of matter 5 senses

Question 11

chemical prop

Answer 11

any of a materials properties that become evident in reactions

Question 12

reactants

Answer 12

a substance that takes part in and undergoes change during reaction

Question 13

products

Answer 13

the substance created in a reaction

Question 14

metals

Answer 14

malleable ductile good conductors of electricity and heat sea of electrons

Question 15

isotope

Answer 15

two or more forms of the same element which. obtain equal numbers of protons but different neutrons

Question 16

atomic mass

Answer 16

weight of an atom

Question 17

mole

Answer 17

unit of meshring substance containing atoms molecules or ions 6.022x1023

Question 18

photons

Answer 18

a particle represent a quantum light or other electrons radiation

Question 19

electron configuration

Answer 19

the distribution of electrons of an atom or molecule in atomic or molecular orbitals
aufbau

Question 20

noble gas configuration

Answer 20

consists of the element symbol of the last noble gas prior to that atom follow by the remaining configuration used as a way to shorten the configuration

Question 21

val e-

Answer 21

electrons on outermost occupied energy level

Question 22

cation

Answer 22

metals
lose electrons become positive

Question 23

anion

Answer 23

gain electrons become negative
non metal

Question 24

electro negativity

Answer 24

chemical property that described the tendency of an atom to attract electrons

Question 25

ionization energy

Answer 25

a measure of the capability of an element to enter chemical reactions

Question 26

covalent bond

Answer 26

shared electrons
nm&nm

Question 27

ionic bond

Answer 27

transfer e
nm & m

Question 28

polar

Answer 28

different electronegativitys share electrons unevenly

Question 29

nonpolar

Answer 29

same atom shares e equally

Question 30

tetrahedral

Answer 30

4 covalent bonds
0 lone pairs
109.5 angle

Question 31

trigonometry pyramidal

Answer 31

one lone pair
three covalent bonds
107 angle

Question 32

linear

Answer 32

2 atoms no line pair

Question 33

trigonal planar

Answer 33

no lone pairs
three covalent bonds
120 angles

Question 34

bent

Answer 34

2 covalent bonds
2 lone pairs
105 angle

Question 35

h bond

Answer 35

2 polar molecules bond w H-NOF

Question 36

LDF

Answer 36

induced dipole
constant motion of electrons cause momentary bonding

Question 37

dipole interactions

Answer 37

between 2 polar molecules without H-NOF

Question 38

combustion

Answer 38

has O2, H2O, and CO2 always

Question 39

synthesis

Answer 39

A+B= AB

Question 40

decomp

Answer 40

AB= A+B

Question 41

double displacement

Answer 41

AB+CD=AD+CB

Question 42

single displacement

Answer 42

AB+C= AC+B