Physical property is the characteristic that can be observed, using the five sense, without changing or trying to change the composition of the substance. Chemical property on the other hand is a characteristic of how the substance reacts. It can not be observed without changing the substance into something else. A physical change is a change in which the form or appearance of matter changes, but not its composition.
If Gabriel developed diarrhea as a result of taking an antacid, he's been taking an antacid that contains magnesium.
Magnesium will act as a laxative.
The brain is incorrect. Its the nucleus (the brain is an organ not a organelle)
hope that helps :)
