Chemistry Warren T1

Front 1

organic chem

Back 1

stdy of most carbon containing compounds

Front 2

inorganic chem

Back 2

study of nonorganic compounds. many of which have organic fragments bonded to metals

Front 3

physical chem

Back 3

study of properties and changes of matter and their relation to energy

Front 4

analytical chem

Back 4

the identification of components and composition of materials

Front 5

bio chemistry

Back 5

study of substances and processes occurring in liviing things

Front 6

theoretical chem

Back 6

use of math and copmuters to understand the principles behind chemical behavior + to design and predict the props of new compounds

Front 7

chemical

Back 7

any substance that has a defined composition

Front 8

mass

Back 8

measure of matter

Front 9

matter

Back 9

that which has mass and occupies space; "an atom is the smallest indivisible unit of matter"

Front 10

atom

Back 10

smallest particle of an element that retains chmical properties of it.

Front 11

element

Back 11

one of a class of substances that cannot be separated into simpler substances by chemical means.

Front 12

compound

Back 12

a thing that is composed of two or more separate elements; a mixture

Front 13

physical property

Back 13

a property used to characterize physical objects

Front 14

physical change

Back 14

change in apperance not composition

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change of state

Back 15

ex. from liguid to gas

Front 16

solid

Back 16

molecules very dense

Front 17

liquid

Back 17

molecules less dense

Front 18

gas

Back 18

molecules very less dense

Front 19

plasma

Back 19

A physical state of matter which exists at extremely high temperatures in which all molecules are dissociated and most atoms are ionized.

Front 20

chemical property

Back 20

a property used to characterize materials in reactions that change their identity

Front 21

chemical reaction

Back 21

A change in the arrangement of atoms or molecules to yield substances of different composition and properties.

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reactant

Back 22

A starting material in a chemical reaction

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group

Back 23

down in periodic table

Front 24

family

Back 24

across in periodic table

Front 25

period

Back 25

down in period table

Front 26

SI units

Back 26

common metric system used in science for scientists

Front 27

weight

Back 27

the vertical force exerted by a mass as a result of gravity

Front 28

volume

Back 28

the amount of 3-dimensional space occupied by an object

Front 29

density

Back 29

mass/volume

Front 30

scientific notation

Back 30

a shorthand way of writing very large or very small numbers. A number expressed in scientific notation is expressed as a decimal number between 1 and 10 multiplied by a power of 10.

Front 31

directly proportional

Back 31

a relationship in which one variable goes up if the other goes up, and down if the other goes down.

Front 32

inversley proportional

Back 32

a relationship in which one variable goes up as the other goes down

Front 33

monoatomic ion

Back 33

positive cations-metals-loose electrons
negative anions-nonmetals-gain electrons

Front 34

polyatomic ion

Back 34

a many atom ion (poly means many) which acts chemically as one unit.

Front 35

binary ionic compound

Back 35

ionic compound with only 2 kinds of atoms

Front 36

binary molecular compound

Back 36

covalent compound with only 2 kinds of atoms (metals)

Front 37

ternary+higher compounds

Back 37

all contain a PoLYATOMIC ion,
tighly bound group of atoms that act like a unit and usually carry a negative charge
usually end in "ate" or "ite"

Front 38

atomic number

Back 38

The number of protons in a nucleus. It determines the chemical properties of an element.

Front 39

isotope

Back 39

same amount of protons, different ammnt of nuetrons

Front 40

mass number

Back 40

summ of protons and nuetrons

Front 41

average atomic mass

Back 41

weighted average of the atomic masses of the naturaly occuring isotopes

Front 42

mole

Back 42

SI unit, amount of substance

Front 43

Avogadros Number

Back 43

6.02 X 10(23) , # of particles

Front 44

molar mass

Back 44

mass in grams, of one mole of substance

Front 45

stoichiometry

Back 45

the calculation of chemical quantities in chemical reactions

Front 46

law of conservation of mass

Back 46

amount of reactants=mass of products

Front 47

empirical formula

Back 47

the simplest whole # ratio of elements in a compound (reduced)

Front 48

Molecular formula

Back 48

the ACTUAL whole # ratio of elements in a whole compound

Front 49

law of definite proportions

Back 49

chemical compound that contains the same elements in exactly the same proportions by mass regardless of the sample or source of the compound.

Front 50

law of multiple proportions

Back 50

if two or more different compounds are composed of the same 2 elements then the ratio of the masses of the second element combined with a certain mass of the 1st element is always a ratio of small whole #'s

Front 51

qualitative observations

Back 51

general observation ex. changed color

Front 52

quantitative observation

Back 52

observation including amount,ect. ex. 5.0g H reacted with something

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accuracy

Back 53

is how close to a true value a measurement is

Front 54

precision

Back 54

is how well a # of independant measurements agree w/ each other

Front 55

rule for addition/subtraction

Back 55

round answer so that it has the same # decimal places as the least presice measurement

Front 56

Rule for multiplication/division

Back 56

round of the answer so that it has the same # of sig. figs as the measurement with the least amount of sig.figs.

Front 57

conversion factor

Back 57

a ratio derived from the equality of 2 different units.

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Thomson

Back 58

all cathode rays are composed of identical negitivley charged particles-nuetrons

Front 59

Milikan

Back 59

measure charge of electron through the oil drop

Front 60

Rutherford

Back 60

gold foiil hit with alpha particles-nucleus deflected them

Front 61

SI length

Back 61

meter

Front 62

SI mass

Back 62

kg

Front 63

SI volume

Back 63

cubic meter

Front 64

SI density

Back 64

Kg per cubic meter

Front 65

props of metalliods

Back 65

conductors or insulators
3-12 transition metals

Front 66

props of nonmetals

Back 66

insulators (dont conduct)
non ductile

Front 67

props of Metals

Back 67

shiny
mettaloids
conductors
ductile