Module 2 Flashcards
1
Q
What does an atom consist of?
A
Protons
Neutrons
Electrons
2
Q
What is the relative charge of a proton?
A
Positive
3
Q
What is the relative mass of a proton?
A
1
4
Q
What is the relative charge of a neutron?
A
0
5
Q
What is the relative mass of a neutron?
A
1
6
Q
What is the relative charge of an electron?
A
0.0005
7
Q
What makes an atom neutral?
A
The total positive charge from protons is cancelled by the total negative charge from electrons.
8
Q
Definition of atomic number?
A
The number of protons in the nucleus of an atom.
9
Q
Oxidation number of oxygen
A
-2
10
Q
Oxidation number of Hydrogen
A
+1
11
Q
Oxidation number of Fluorine
A
-1
12
Q
Oxidation number of Na+,K+
A
+1
13
Q
Oxidation number of Mg2+,Ca2+
A
+2
14
Q
Oxidation number of Cl-,Br-,I-
A
-1
15
Q
Oxidation number of Hydrogen in metal hydrides
A
-1
E.g. NaH,CaH2
