Atomic theory

Front

Which particle carries a negative charge? Options: Electron, Neutron, Proton

Back

Electron

Front

Which particle carries a positive charge? Options: Electron, Neutron, Proton

Back

Proton

Front

With the gold foil experiment, Rutherford concluded that...

Back

atoms were mostly empty space

Front

Which 2 particles have about the same mass and contribute the entire mass of the atom?

Back

protons & neutrons

Front

If an atom becomes NEGATIVELY charged, what has happened? Options: gains an electron, gains a proton, loses an electron, loses a proton

Back

gains an electron

Front

Isotopes of the same element contain the same number of protons but different number of...
Options: neutrons, electrons, both, neither

Back

neutrons

Front

An element's ATOMIC NUMBER tells you how many ____________ it has. Options: protons, electrons, neutrons

Back

protons

Front

An ion with a +1 charge tells you that it has...

Back

more protons

Front

Calculate the proton number of Se^-2

Back

34

Front

Calculate the electron number of Se^-2

Back

36