3 things I've learn:
1)I've learnt that when a chemical is dropped into a red or blue litmus paper and no change was made on the colour of the paper , the chemical is a neutral.
2)I've learnt that acids turn blue litmus red.
3)I've learnt that in the human body , the stomach produces hydrochloric acid to kill bacteria in the present food we eat and activates protease of digestion to take place.
2 things I want to know :
1)Is there other colours of litmus papers?
2)Do animals also produce hydrochloric acid in their stomach?
1 thing I'm unsure about:
1) Are alkalines found in our human bodies?