Fechar
Which of the pH numbers indicates a neutral substance?
What colour is universal indicator in a neutral solution?
Which of the pH numbers indicates a strong acid?
Which of the following substances contain an alkali?
Baking powder
Coca cola
Distilled water
Vinegar
What is a hazard of acids and alkalis?
Which of the pH numbers indicate a strong alkali?
Which of the following substances are acidic?
An orange
Bleach
Distilled water
Washing powder
What colour is universal indicator in strong acid?
What colour is universal indicator in a strong alkali?
