Elements - Mixtures - Compounds Flashcards
What’s the relative mass of an electron?
1/2000
What’s the relative charge of an electron?
-1
What’s the relative mass of a proton
1
What’s the relative charge of a proton
+1
What’s the relative mass of a neutron
1
What’s the relative charge of a neutron
0
What does the atomic number also mean?
How many electrons there is
What does the mass number also =
The total number of everything.
Atomic number - mass number = number of neutrons
What’s the radius of an atom
1x10 to the - 10
How do you calculate the relative atomic mass
( Mass A x % abundance A ) + ( Mass B x % abundance B )
Give an example of a non-metal
Argon
Why’s it called the periodic table?
Because it’s arranges in groups and periods. Elements are in order of increasing atomic number.
What was the ‘pudding’ of the plumb pudding model
Positive charge
Who created the periodic table
Dmitri Mendeleev
What is the structure and bonding of 2 non-metals
Simple - covalent
Properties:
Low my / bp
Poor condition in liquid + solid
What’s the structure and bonding of a metal and a non-metal
Giant - ionic
Properties:
High mp / bp
X conduction in solid
✅ conduction in water
What’s the structure and bonding or 2 metals
Giant - metallic
Properties
High mp / bp
✅ conduction in solid and liquid
What’s special about graphite or diamond
It’s giant covalent
Properties
High mp / bp
X conduction in anything ( all electrons taken )
