Question 65
The picture shows a strip of silver-coloured metal placed in a liquid. Tiny bubbles have formed on the strip of metal. The liquid remains colourless.
Tick (✓) the option that correctly completes the sentence.
The metal could be ______ and the liquid could be ______.
A. potassium; dilute nitric acid
B. magnesium; cold water
C. zinc; dilute sulfuric acid
D. calcium; warm water
Tick (✓) the option that correctly completes the sentence.
The metal could be ______ and the liquid could be ______.
A. potassium; dilute nitric acid
B. magnesium; cold water
C. zinc; dilute sulfuric acid
D. calcium; warm water
