periodic table
what atomic number is rhodium?
45
who found the atom?
dalton
what are the three states of matter?
solid, liquid, and gas
what is mass?
mass is how much matter is in an object
what are the three phases of matter?
solid, liquid, gas
how many neutrons does iron have?
30
who made the bohr model?
bohr
small space
how to calculate density?
mass divide volume
how does a fridge cool food?
it removes energy
which period tables family is most reactive?
alkali metals
who found electron?
thomson
what does kmt relate to?
states of matter
whats the difference between weight and mass
mass is amount of particles, weight is gravitational pull of an object
can scientists cool things to absolute zero?
no
how is the periodic table sorted?
groups and periods.
who discovered energy shells?
bohr
what matter has the greatest amount of spaced particles?
gas
what material floats on water? (include density)
oil 0.9
what is absolute zero
when particles completely stop
what does the periodic table help us with?
finding atomic masses and neutrons
what did John dalton find?
the atom.
what are the four main points in kmt?
matter, space, moving, and attraction
how do you calculate temperatures?
with the speed of molecules
what is needing to change the phase of matter?
it needs to add or take away energy