Jan 2013 Flashcards
1
Q
Why can more oxygen be stored when it is a liquid?
A
More closely packed together.
2
Q
What happens when MgO forms?
A
White flame and white powder.
3
Q
What is the first step in precipitation reaction?
A
Dissolve both in water.
4
Q
Moles =
A
Volume / 24.
5
Q
Why could a gas value be wrong?
A
Some gas dissolved, gas was lost when replacing it between adding reactant.
6
Q
What happens when chloroethene forms polychlorene?
A
Double bond breaks, monomers join together, to form a long chain. Product only contains single bonds.
