Atoms
What is an atom?
An atom is a basic unit of matter
What is matter?
Matter is anything that has mass and takes up space
What are the three subatomic particles?
protons, neutrons, and electrons
The atomic number is eleven. What is the number of protons?
11 protons
Which scientist came up with the Bohr model
Bohr
What type of charge does cation have?
positive(+)
What is mass?
the amount of matter in an object
What kind of charge does a proton have?
positive
If there are 21 protons, how many electrons are there?
21 electrons
Which scientist thought atoms were invisible particles?
Democritus
What type of charge does anion have?
negative(-)
What is volume?
the space occupied by an object
What kind of charge does a electron have?
negative
The atomic number is 8 and the mass number is 13. What is the number of neutrons?
5 neutrons
Which scientist came up with the plum pudding model?
J.J. Thompson
What is an isotope?
it is the same element but the neutrons changed/are different
What is density?
mass contained in a particular volume
What kind of charge does a neutron have?
neutral
There are 6 protons and 3 neutrons. What is the mass number?
mass number=9
Who made the nuclear model?
Ernest Rutherford
What is an ion?
a charged atom or group of atoms
What is the mass formula?
M=DxV
Where are the electrons located?
on the orbitals
Tellurium-123 has 71 neutrons. What is its atomic number?
atomic number=52
Who made the atomic model?
Hantaro Nagaoko