measuring change Flashcards
1
Q
what is caused by change in concentration?
A
rate of reaction
2
Q
What do you think will happen to the rate of reaction when the concentration of acid is increased?
A
the rate of reaction is going to increase
3
Q
Precipitate definition
A
solid formed on the reaction of two solutions
4
Q
exothermic reactions
A
a reaction that releases energy - the temp gets hotter
5
Q
endothermic reactions
A
a reaction that absorbs - temp goes down
6
Q
example of endothermic reaction
A
e.g. instant ice pack
7
Q
example of exothermic reaction
A
e.g. wood burning
8
Q
two metals of different reactivity will not produce a potential difference when connected in a circuit
A
false
9
Q
the bigger difference in a potential difference
A
greater the difference in reactivity between the metals
