mistakes made Flashcards
(13 cards)
what are products of incomplete combustion?
carbon monoxide, water, carbon
draw out the isomers of C5H12
there are 3
what do you have a cotton ball in a flask?
to prevent liquid loss, otherwise the mass lost would be too large
why are polystyrene cups used instead of beakers in practicals?
less heat is lost because polystirene is an insulator
why is buckminste fulerene used by doctors when injecting medicine into patients?
- medicine can fit inside
- carbon is inert
how stron are the forces betweeen the layers in graphite
weak
The ionic half-equation for the reaction at the negative electrode is
Al3+ + 3e- –> Al
What type of reaction is occurring at the negative electrode?
reduction
gain of electrons
aluminium is extracted in industry.
The product formed at one of the electrodes reacts with the electrode to form carbon monoxide and carbon dioxide. what is this product?
oxygen
why is aluminium ductile?
the layers of particles/ions slide over each other
how come aluminium is a conductor?
sea of delocalised electrons move
can carry charge WITHIN AND THROUGH the structure
State a property that makes aluminium suitable for manufacturing aircraft
bodies.
low density
3 marker - how to obtain a dry solution from soemthing
- filter
- wash
- pat dry
