chemistry revision Flashcards
revise for chemistry
1
Q
what is a proton
A
a subatomic particle that is the positive charge in a atom
2
Q
what is a neutron
A
a subatomic particle that is the neutral charge of an atom
3
Q
in an element in the periodic table what is the bottom number
A
the proton number
4
Q
what is an electron
A
a subatomic particle that is the negative charge of the atom
5
Q
who suggested that electrons orbit the nucleus at specific distances
A
niels bohr
6
Q
what does the symbol K mean on the periodic table
A
potassium
7
Q
what does the symbol Na mean on the periodic table
A
sodium
8
Q
what does the symbol Cl mean on the periodic table
A
chlorine
9
Q
what does the symbol Mg mean on the periodic able
A
magnessium
10
Q
what does the symbol Cu mean on the periodic table
A
Copper
11
Q
what group in the periodic table are the metals in
A
group 1 and 2
