E.OY Revision [2023] Flashcards
1
Q
What is an isotope?
A
Atoms of the same element, with different mumbers of neutrons
2
Q
What is the relative mass of a proton?
A
1
3
Q
What is the relative mass of electrons?
A
0/very small
4
Q
What is the relative mass of protons?
A
1
5
Q
What is the charge of an electron?
A
-1
6
Q
What is the charge of an neutron?
A
neutral
7
Q
What is the charge of a proton?
A
+1/1
8
Q
Why can graphite conduct electricity? [2]
A
It has a delocalised electron, that can carry an eletrical charge throughout the whole structure.
9
Q
What is the formula of Buckminsterfullerene?
C10
C20
C40
C50
C60
C70
C80
C90
A
Answer: C60
10
Q
What are Alloys? And why are they harder than pure metals?
A
Alloy-mixtures of metal, with other elements (normally metals).
- Because different size atoms distort the layers, this means they can’t slide over each other.
-Therefore, this is why alloys are harder than pure metals.
