Formulae
Name?
PF3
Phosphorous Trifluoride
Name one substance that sublimes.
Naphthalene (Moth balls)
Iodine
dry ice
ammonium chloride
Why do atoms form chemical bonds?
a) To become radioactive
b) To gain stability
c) To increase size
d) To lose neutrons
b) To gain stability
Sodium hydroxide and hydrochloric acid
produces sodium chloride and water
Label A in the diagram
Weak intermolecular forces
NO2
Nitrogen Dioxide
What is an acid anhydride
Acid anhydride is a compound which reacts with water to form an acid
Aluminium oxide and sulphuric acid
Aluminium sulphate and water
Label B and C
B= Carbon Atom
C= Covalent Bond
AlCl3
Aluminium Chloride
Give TWO named examples of acid anhydrides
Carbon Dioxide
Sulfur Dioxide
Sulphur Trioxide
Nitrogen Dioxide
calcium hydrogen carbonate and hydrochloric acid
calcium chloride, carbon dioxide and water
Label D and E
D= Covalent Bond
E= Carbon Atom
What is the formula of the following:
Dihydrogen Monoxide
H2O
What is ascorbic acid commonly known as
Vitamin C
Ionic bonding occurs between:
a) Two metals
b) Two non-metals
c) A metal and a non-metal
d) Noble gases
c) A metal and a non-metal
aluminium reacting with hydrochloric acid
aluminium chloride and hydrogen gas
Label the processes A and B
A= Melting
B= Boiling/Evaportion
What is the name of the following:
H3PO4
Phosphoric Acid
Define the term acid Acid
An acid is a proton donor
magnesium oxide and phosphoric acid
magnesium phosphate and water
Label the processes of C, D and E
C= Freezing
D= Condensation
E= Sublimation