Which Of these describes an element best?
A Building Block
B Made Of Only One Type Of Atom
C Contains No Chemical Bonds
D Pure Substance
B
Approximately How Many Elements Are There In The Periodic Table?
A 20
B 64
C 118
D 365
C
Groups in the periodic table contain elements with:
A similar atomic mass 
B similar colour
C similar uses
D similar chemical properties
D
Which element is represented by the symbol Cu?
A Copper 
B Carbon
C Chlorine
D Calcium
A
Atoms are made up of:
A Nuclei surrounded by proton(s) 
B Nuclei surrounded by electron(s)
C Neutrons surrounded by electron(s)
D Nuclei and cell membrane(s)
B
Forming compounds involves
A Sharing electrons
B Gain & loss of electrons
C Gain & loss or sharing electrons
D None of the above
A
Compounds are held together by:
A Atomic forces
B Intermolecular forces
C Chemical bonds
D Gluons
B
The formula of a compound shows:
A how a compound was made
B reactivity of a compound
C bonding in a compound
D number and type of atom in the compound
D
Ammonia  gas may be represented by which of the following:
A NH4+ 
B NH3
C NH4
D NH3+
D
A sulphuric acid molecule, H2SO4, contains:
A 1 hydrogen atom  & 1 sulphur atom
B 2 hydrogen atoms  & 1 sulphur atom
C 1 hydrogen atom  & 2 sulphur atoms
D 1 hydrogen atom  & 2 sodium atoms
B
For each carbon atom in (NH4)2CO3 there is/are:
A Eight hydrogen atoms 
B One nitrogen atom
C One and a half oxygen atoms
D Three oxygen molecules
C
Water, methane and ammonia
A All contain oxygen atoms 
B All burn in oxygen
C Are all often used as fuels
D All contain hydrogen atoms
D
Carbon dioxide is an environmental problem because 
A It is a greenhouse gas 
B It binds to haemoglobin
C Carbonic acid is strongly acidic
D It damages the ozone layer
A
The left hand side of a chemical equation has:
A more energy than the right	 
B same number of atoms as the right
C less energy than the right
D fewer atoms than the right
B
During a chemical reaction
A Mass is conserved 
B Heat is always given out
C Gases are always produced
D Elements are never formed
A
Limestone has been used to build:
A Houses 
B Churches
C Bridges
D All of the above
D
Thermal decomposition means a compound is:
A Broken down using electricity 
B Broken down using heat
C Produced from elements using heat
D Broken down by sunlight
B
When calcium carbonate is heated, the gas it produces:
A Bleaches damp litmus paper	 
B Relights a glowing splint
C Burns with a squeaky pop
D Turns limewater cloudy
B
Calcium oxide is also known as:
A Slaked lime 
B Quick lime
C Limewater
D Limestone
D
When copper carbonate is heated it produces:
A Copper oxide and carbon dioxide 
B Copper and carbon dioxide
C Copper oxide and carbon monoxide
D Copper and carbon monoxide
A
Slaked lime is often used:
A To make soil less acidic	 
B To make soil more acidic
C To store acid in soil
D To test for carbon dioxide
A		
Limestone is an important raw material for making:
A Paint; paper & nylon
B Mortar; cement & concrete 
C Plastic; rubber & petrol
D China; steel & silk
B
The reaction between calcium hydroxide and sulphuric acid produces calcium sulphate plus:
A Hydrogen
B Carbon dioxide
C Water
D Oxygen
BX