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mix something with something = ?? chem reaction
put grams in = ?? same # comes out 14 cookies + 14 milk out = 28 g...
average atomic mass? The number at the bottom of the box (periodic table) Weighted Average of all of the isotopes of the element, (has decimal points) THE PERCENT GOES IN THE PARENTHESE15(150) + 17(17)= . . . atomic mass
hunds rule? Electrons must fill orbitals one at a time b4 they can double up.
Mendeelev? created a peridoc table arranged by atomic mass.
Aufbau? electrons are lazy, they occupy the lowest energy lvl first.
Thompson? developed the plum pudding atomic model.
Rutherford? discovered the nuclues.
Dalton? Discovered the 1st scientific atomic theory.
groups? run up and down
atomic mass? in decimal form. weighted average of an isoptope
anions? likely to attract electrons in a bond.
frequency? # of waves per amount of time
gama radition? most likely to cause damage to human tissue!
alphaparticle? two protons, two nuetrons like a HELIUM NUCLUES
metallic bonds? bonds between METALS using free floating valence electrons; allow solids to conduct electricity
covalent bonds? share electrons ONLY between nonmetals # known as MOLECULAR COMPOUNDS!!
ionic bonds? metal and nonmetal GOOD conductor of electrical current
carbonmonoxide? Co#triple covalent bond so does nitrogen gas N under 2
no what in carbondioxide? no single bonds (Co under 2)
metal is not . . .? a good insulator!
noble gas b4 aluminum . . . same configuration
neon cannot have both what. . .? covalent and ionic bonds with at least 3 elements
molecular compounds are . . .? covalent
covalent bonding. . .? 1 mono- 2 di- 3 tri- 4 tetra- 5 penta- 6 hexa
coefficents in a reaction are . . .? moles NOT grams ( only equal on both sides)
limiting reagent? when the first reactant is used up
kinetic theory of gases? absolute zero is the temp. that the motion of particles stop 1. particles of a gas move independantly of one another# 2. move rapidly/quickly# 3. particles are FAR APART
zero K? Zero Calvin
matter flows as . . . what? a gas an a liquid but not a solid
the 1st particle to evaporate has to have the . . . ? highest kinetic energy
liquid boils when . . . ? the vapor pressure is equal to the atmophere
when you go up a mountain the boiling point . . .? decreases bcuz the atmosphere pressure decreases.
5 physical properties? smell # taste # texture #melting point #color
chemical reaction? when chemicals combine and form new reactants
Created by: Celinaaa