Acids and metal Flashcards
1
Q
What happens when an acid and metal react?
A
A salt and hydrogen gas is formed
2
Q
What is the least reactive metal?
A
Gold
3
Q
What does it mean if there’s lots of bubbles in a solution after an experiment?
A
The metal was very reactive
4
Q
Give 3 signs of a reaction:
A
bubbling
strong smells
colour change
5
Q
What is the rate of reaction?
A
how much product is made per second
6
Q
How can rate of reaction be measured:
A
- time taken to change colour
- mass lost
- volume of gas produced
7
Q
What is the formula used to calculate the mean rate of reaction?
A
quantity of product formed/time taken
( eg. 50g formed in 25 seconds = 2 cm 3/s rate of reaction )
