Question

a scientist is conducting an investigation that involves water, silver, carbon dioxide, and cryogen gas. which group of statements best describe all of the materials he is using in the investigation? they are each compounds. each of the compounds is made of atoms. all of the atoms are made of matter. they are each made of matter. some are compounds and some are elements. they all contain atoms. they are all elements. some contain molecules of the same type of atom. some contain different types of atoms. they are each made of matter. some are compounds made of one type of element. some are pure atoms.

Explanation:

• Water (\(H_2O\)): Compound (made of hydrogen and oxygen atoms).
• Silver (\(Ag\)): Element (made of silver atoms).
• Carbon dioxide (\(CO_2\)): Compound (made of carbon and oxygen atoms).
• Oxygen gas (\(O_2\)): Element (made of oxygen atoms).
• All are matter (anything that has mass and takes up space). Compounds have different types of atoms, elements have the same type of atoms, and all contain atoms.

Answer:

They are each made of matter. Some are compounds and some are elements. They all contain atoms.