things i didnt know Flashcards
(8 cards)
1
Q
how many cm^3 in 1dm^3
A
1000 !!!!
2
Q
concentration formula
A
mass divided by volume
(g per dm ^3)
3
Q
method to investigate temp change as different salt masses dissolved in water
A
use test tube + insulation
add 1g mass + water
stirs dissolve
measure temp before and after
calculate difference = temp change
control = same amount of water
repeat= with different masses
4
Q
A
5
Q
Formula for overall energy change
A
product- reactant
6
Q
how many e are in a bond
o=o
A
2 (1 pair)
7
Q
how many e in a double bond
A
4(2pairs)
8
Q
A
