C4 Flashcards
Relative charge and mass of an electron, proton and neutorn
Relative Charge Relative Mass
Electron - 0
Proton + 1
Neutron 0 1
What is the Atomic number and Mass number of Lithium?
7
Li
3
Atomic Number = 3 Mass Number = 7 Protons= 3 Neutrons= 4 Electrons= 3
What is an ISOTOPE?
Elements with the same atomic number but different mass number are ISOTOPES
Carbon-14 is an ISOTOPE of carbon how does it differ from Carbon-12 (Carbon-12 is the element found in the periodic table)
Carbon-14 Carbon-12
Protons 6 6
Electrons 6 6
Neutrons 8 6
What period and group would you find the element Sodium(Na) and why?
Group 2 because it has two electrons in its outer shell and period 3 because it has 3 electron shells
What element has the electronic structure 2.8.7?
Chlorine
Atoms with an outer shell of eight electrons have a…
… stable electronic structure
Atoms can be made stable by TRANSFERRING electrons this is called _____ bonding
Ionic
Which type of elements use ionic bonding?
a. non-metals + non-metals
b. non-metals + metals
c. metals + metals
b. non-metals + metals
Explain how ionic bonding works
LOOK IN REVISION GUIDE!!!
Example I NEED to know:
What is the structure of sodium chloride or magnesium oxide
Giant ionic lattice
Five facts about Giant Ionic Lattices
- they have a strong electrostatic bonds
- they always exist in solids
- when they are in a solution or molten they conduct electricity
- they have high melting points
- the more electrons donated the stronger the bond
Atoms can be made stable by SHARING electrons this is called ________ bonding
Covalent
Which type of elements use covalent bonding?
a. non-metals + non-metals
b. non-metals + metals
c. metals + metals
a. non-metals + non-metals
c. metals + metals
Water and Carbon Dioxide have covalent bonds do they have weak or strong intermolecular forces?
They have weak intermolecular forces which makes them have a low melting and boiling point.
