Rate of reactions Flashcards
1
Q
What is meant by physical change
A
A change that can be reversed by altering the conditions (man-made)
2
Q
What is meant by chemical change
A
A change where new products are formed and can be reversed only by further chemical reactions
3
Q
What is a catalyst
A
A substance that increases the rate of reaction
4
Q
Effect on a reaction by increasing concentration gradient
A
Reaction increased
5
Q
Effect on a reaction by increasing pressure
A
reaction increased
6
Q
Effect on reaction by increasing surface area
A
Reaction increased
7
Q
Effect on reaction by increasing temperature
A
Reaction increased
8
Q
Effect on reaction by the use of an appropriate catalyst
A
Reaction increased
