Elements,atoms and compound Mixtures Flashcards
1
Q
All elements of the periodic table have…
A
Atoms
2
Q
An element is made up of..
A
One atom only
3
Q
How are elements made?
A
Nuclear reactions
4
Q
Protons mass
A
1
5
Q
Neutron mass
A
1
6
Q
Electron mass
A
Almost 0
7
Q
Protons charge
A
+1
8
Q
Neutron charge
A
0
9
Q
Election charge
A
-1
10
Q
Atoms are made up of what
A
Protons
Neutrons
Electrons
11
Q
The first shell of an atom contains how many electrons
A
2 electrons
12
Q
The second shell of an atom contains how many electrons
A
8 electrons
13
Q
The third shell of an atom contains how many electrons
A
8 electrons
14
Q
Where is the nucleus located in an atom?
A
Middle of the atom covered by the shells
15
Q
What is an isotope
A
An atom that has different number of neutrons from the majority of the atom
16
Q
Mono meaning
A
One