A very short answer: a chemical (chemical compound, substance) is a combination of two or more chemical elements.
All acids are chemicals but not all chemicals are acids.
Without chemicals there would be no matter at all. Everything is made of chemicals; water, stomach acid and chocolate are all made of chemicals.
Yes, all drugs contain chemicals.
Anything you can touch has chemicals in it.
Because all drugs are chemicals.
All medicines have chemicals in them, as everything around us can be defined as chemicals.
Not ALL reactions are chemicals. When chemicals reacte with other chemicals it is called as chemical reactions.
All matter that you are concerned with is made up of chemicals.
All organisms are alive and made of chemicals.
Yes, all living things contain chemicals.
No there are no chemicals added, they are all natural.
All popcorn contains chemicals. What do you think makes it yellow? All popcorn contains chemicals. What do you think makes it yellow?