Answer:
Hydrogen = element
Carbon dioxide = compound
Water = compound
Zinc = element
Nitrogen = element
Salt = compound
Helium = element
Carbon monoxide = compound
Explanation:
An element and a compound are different when it comes to the types of atoms they possess. An element has only<u><em> one type of atom</em></u> while a compound has <u><em>two types of atoms.</em></u> For example, Hydrogen is an element because it has two atoms of the same type and that is, the "Hydrogen atom."
On the contrary, Carbon dioxide has<u><em> one carbon atom</em></u> and<u><em> two atoms for Oxygen.</em></u> Therefore, it is a compound because it has two types of atoms: <u><em>Carbon atom</em></u> and <em><u>Oxygen atom.</u></em>
Water has<u><em> two atoms of Hydrogen </em></u>and<u><em> one atom of Oxygen</em></u>. Therefore, it is a compound because it has two types of atoms: <u><em>Hydrogen atom</em></u> and <u><em>Oxygen atom</em></u>.
Answer:
They both have a cell wall
Explanation: