A It reacts with a carbonate to form carbon dioxide.
B It reacts with an acid to form a salt.
C It reacts with an ammonium salt to form ammonia.
D It turns universal indicator paper blue.
Question 3
Question
A sting from insect X has a pH of 6 and a sting from insect Y has a pH of 8.
The table shows the pH of four substances.
Which substances are used to treat the two stings?
The table shows the pH of four aqueous solutions, W, X, Y and Z.
Universal Indicator is added to each solution.
Which row shows the colour of each solution after the indicator is added?