GCSE (Chemistry) GCSE Fichas sobre Chemistry Test Feedback Questions, creado por I Turner el 29/09/2014.
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Creado por I Turner
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Creado por I Turner
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BONDING, STRUCTURES, POLYMERS AND NONSCIENCE
practice exam questions
What is a Covalent Bond?
Draw an ammonia atom
(hint: nitrogen (below) and hydrogen)
How many neutrons are there in an atom of gold?
How does a gold atom become a gold ion?
Balance this equation:
......CO + ...... = ......CO2
Why does Carbon Dioxide have a very low boiling point?
Why is gold still used in industrial processes?
What experiment, on its own, cannot fully answer one of the following questions:
-How much Carbon dioxide is produced when 100kg of kelp is burned?
-Will kelp last longer than coal as an energy source?
-Does kelp give out more heat energy than coal?
Why can't scientists answer: 'should people use kelp instead of coal as an energy source'?
How many electrons are there in the outer shell of an iodine atom?
What happens when sodium atoms react with iodine atoms to produce sodium iodide?
Why does sodium iodide SOLUTION conduct electricity?
Why is silicon dioxide a suitable material for lining furnaces?
Why is graphite SOFTER than diamond?
Graphite conducts electricity, diamond does not
EXPLAIN WHY
Describe the structure of a metal
Why are metals good conductors of heat?
How are nanosized particles different from normal sized particles?
Suggest one reason why nanosized particles of silver might help to transfer heat better than normal sized particles?
Why would Thermosoftening Polymers not suitable for packaging very hot foods
