Chemistry (Yr 10) What does this mean?

Jess

New member
Heey
Can you please help me, with chemistry..
- What is a proton, a neutron and an electron?
Can some one explain to me what this means and how i get the answer (reading straight from worksheet)

13)-How many protons, neutrons and electrons are in the following?
a) 33
S
16

b) 235
U
92

c) 41
Ca2+ (The 2 plus bit is mini and up in the air..aha)
20

Can you please explain like step by step like you would to a lil kid..
Thankyouuxx
 
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