C4 - Chemical Calculations Flashcards
1
Q
What is the charge of a proton?
A
+1
2
Q
What is the relative mass of a proton?
A
1
3
Q
What is the charge of a neutron?
A
0
4
Q
What is the relative mass of a neutron ?
A
1
5
Q
What is the charge of an electron?
A
-1
6
Q
What is the relative mass of an electron?
A
0 (nearly)
7
Q
What is the mass number in the periodic table ?
A
the big number
8
Q
How do you work out the mass number in a periodic table ?
A
Protons + neutrons .
9
Q
What is the atomic number ?
A
the smaller number
10
Q
What is the atomic number (2)?
A
Protons
11
Q
How do you work out the number of neutrons ?
A
Mass number - Atomic number .
12
Q
What happens if we increase the mass of solute but keep the same volume?
A
concentration increases
13
Q
What happens if we increase the volume but keep the mss of solute the same ?
A
concentration decreases
