periodic table
what is the 8th atom on the periodic table
oxygen
what are the three types of matter
solids, liquids gas
what is unit mass measured in
grams
who discovered the atom
Dalton
who created the bhor model
bhor
what is the atomic number of boron
5
what does kmt stand for
kinetic molecular theory
what is the unit used to measure liquids
mLs
who discovered the gold foil experiment
ernest rutherford
how many electrons are on the outer shell of a bhor model
18
what is the chemical symbol for oxygen
O
what is the freezing and melting point
0 degrees
if you know the mass and volume of an object what can you calculate
Density
arcording to the atomic theory what is everything made of
atoms
a bhor model is about
atoms
does a period go up or across on the periodic table
across
when the temperture of a gas particle increases do the particles move faster or slower
faster
how do you find the density of an object
density= mass divided by volume
what is JJ Thomson's first name
joseph john
what is a bhor model made of
nucleas and electrons
how many atoms are on the periodic table
118
what is it called when a gas turns to a solid
sublimation
when measuring a liquid what is the curve called
meniscus curve
what year was the nucleas discovered
1911
in a bhor model the electrons move in A] random paths or B] fixed orbits
B] fixed orbits