WorksheetsAtomic Structure CFA #1, 23-24, gk
Total questions: 25
Worksheet time: 14mins
Most of an atom is made of this
Protons have a mass of
1 gram
1 mg
1 amu
1.67 g
An element's identity is determined by
the number of protons
the number of nucleons
the total of the subatomic particles
the amount of mass in the nucleus
-24 ng
The charge of every nucleus.
positive
negative
neutral
sometimes positive and sometimes negative
The overall charge of all atoms
The current electron cloud model of the atom represents
overall constant particle emissions
constant motion of the nucleus
probabilities of locations of electrons
where the electrons actually are in relation to the nucleus
These subatomic particles have so little actual mass that their mass has no effect on the overall mass of any atom.
electrons
protons
neutrons
All atoms of the same element have the same number of these
positrons
The nucleus of an atom should not hold together because
electrons repel each other
protons repel each other
neutrons are in the way all of the time
All of an atom's mass is considered to be
just the protons
in the electron cloud
in the nucleus
No charge with 1 amu
neutron
proton
electron
Atoms are neutral overall in charge is because of equal numbers of
quarks
neutrons and electrons
protons and electrons
protons and neutrons
Holds the nucleus together
weak nuclear force
electromagnetic force
strong nuclear force
The smallest part of an element that still has the properties of the element.
atom
ion
isotope
molecule
These help hold the nucleus together.
neutrons
protons
electrons
This attracts the nucleus and the electrons to each other and prevents the electrons from flying off.
electromagnetic force
weak nuclear force
centripetal force
strong nuclear force
