C Flashcards
What happens if melting point is low
Weak intermolecular forces of attraction
Does not conduct electricity when molten
There are no charged particles free to move
What happens if there is a high boiling point
Bonds are strong
Conducts electricity when molten
Ions are free to move
Who discovered the neutron
James Chadwick
Why does a solution containing sulfur turn cloudy
Because it is a precipitate
How can you improve the accuracy of an investigation
Take averages
What word describes an investigation which gives a similar result each time
Repeatable
What is one mole equal to
6.02 x 10 to the power of 23
What does it mean if the temperature of the reaction stops increasing
It is in excess
Why is nitrogen a gas at room temperature
It has weak intermolecular forces between the molecules
Why is graphite soft and is a good conductor of electricity
It forms layers that can slide over each other and they conduct electricity because they are delocalised electrons
What could it mean if the percentage yield in a reaction is not 100%
Some of it could’ve been lost whilst separating
Why is nitrogen a gas at room temperature
It has weak intermolecular forces between the molecules
What does it mean if the temperature of the reaction stops increasing
It is in excess
