Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
45 Cards in this Set
- Front
- Back
define chemistry
|
study of matter and its changes
|
|
matter
|
anything that takes up space and has mass.
|
|
organic chemistry
|
studying the chemistry of compounds that contain carbon atoms
|
|
inorganic chemistry
|
studying the chemistry of compounds that do not contain carbon atoms.
|
|
biochemistry
|
study of compounds that are associated with living systems
|
|
analytical chemistry
|
detecting, identifying, and quantifying chemicals.
|
|
physical property
|
observed or measured without changing the identity.
|
|
chemical property
|
change in the composition does change.
|
|
Who discovered the electron
|
JJ Thomson
|
|
Who discovered alpha particles
|
Rutherford
|
|
Who proposed neutral atom
|
Rutherford
|
|
define ion
|
number or protons and electrons are different
|
|
positivly charged ions are called, while neg. charged ions are..
|
cations....anions.
|
|
atomic mass
|
weighted average of masses of all isotopes of an element
|
|
Pauli Exclusion Principle
|
can hold up to 2 electrons
|
|
Group 1
|
Alkali metals
|
|
group 2
|
alkaline earth metals
|
|
group 16
|
chalcogens
|
|
group 17
|
halogens
|
|
group 18
|
noble gases
|
|
Characterictics of metals
|
malleable, shiny, ductile, loses electrons, conducts electricity.
|
|
ionic bonds usually form with
|
metal and a nonmetal
|
|
covalent bonds usually form with
|
two nonmetals
|
|
NACN
|
sodium cyanide
|
|
FeSO4
|
Iron(II)sulfate
|
|
define isomers
|
same chemical formula but different molecular structure.
|
|
in VSEPR how many degrees are linear?
|
180
|
|
Degree of trigonal planar
|
120
|
|
Degree of tetrahedral
|
109.5
|
|
define pyramidal
|
3 electrons pairs with one love pair
|
|
define bent
|
2 electron pairs with two lone pairs
|
|
the 4 biggest "bullies" in wanting to get electrons
|
Flourine, Oxygen, Nitrogen, Chlorine.
|
|
define electronegativity
|
measure of the abolity of an atom to attract electrons.
|
|
When there is a big difference in electronegativity the atom is more...
|
polar.
|
|
When the electronegaticity is greater than 2 then..
|
its an ionic bond
|
|
a dipole is..
|
1 end is positive and 1 end is negative.
|
|
Polar molecules (2 things)
|
have higher boiling points and are more soluble.
|
|
law of mass conservation
|
matter cannot be created nor destroyed in any physical/chemical change.
|
|
the mole is known as
|
Avogodro's number.
6.02x10 (23) |
|
who discovered the neutron
|
chadwick
|
|
homogeneous
|
having uniform composition
|
|
heterogeneous
|
having nonuniform composition
|
|
suspension
|
a heterogeneous mixture that settles
|
|
colliod
|
heterogeneous that does not settle
|
|
solution
|
homogeneous that does not settle
|