They are finite in number.
They are infinite in number.
They combine to form atoms.
They combine to form electrons.
2. Scientists have developed a new drug known to cure a previously incurable disease. What best explains if the new drug is a compound or not?
It is a compound because it will be able to cure a disease.
It is not a compound because it was developed by scientists.
It is a compound because compounds make all types of matter.
It is not a compound because compounds make up only living things.