Chemistry AQA a LEVEL AS PAPER 1 2024 UPDATE GRADED A+

Chemistry AQA a LEVEL AS
PAPER 1 2024 UPDATE
GRADED A+

, what are the three fundamental particles that make up an atom? -
CORRECT ANSWER-protons, neutrons and electrons


nucleus - CORRECT ANSWER-- most of mass of atom is
concentrated in the nucleus
- the diameter of the nucleus is rather titchy compared to the whole
atom
- protons and neutrons are sometimes found in the nucleus


electrons - CORRECT ANSWER-- electrons have a -1 charge
- they surround the nucleus
- the orbitals take up most of the volume of the atom


mass and charge of these subatomic particles are really small, so
relative mass and relative charge are usually used instead -
CORRECT ANSWER-proton:
relative mass- 1
relative charge- +1
neutron:
relative mass- 1
relative charge- 0
electron:
relative mass- 1/2000