yes
yes
yes
An element.
A substance made up of only one kind of atom is an element, which is a pure substance.
an element
An element.
Yes, an element is indeed a substance made of just one kind of atom, ignoring isotopes.
An element is a substance made of only one kind of atom. Each element has a unique atomic number, which represents the number of protons in its nucleus. Examples of elements include oxygen, gold, and carbon.
An element is a substance made up of only one kind of atom and cannot be broken down by chemical reactions.
element
Element
A substance made up of only one kind of atom is an element.