element
Aluminum contains only one kind of atom.
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.
hydrogen
No. An element is a pure substance made of only one kind of atom. A compound is a pure substance made of two or more kinds of atom.
An element is a substance made up of only one kind of atom and cannot be broken down by chemical reactions.
A substance that only contains one kind of atom is called an element.
A substance that contains only one type of atom is called an "element".
An element is a substance that contains only one kind of atom. Examples include hydrogen, oxygen, and carbon. Each element is defined by the number of protons in its atomic nucleus.
Aluminum contains only one kind of atom.
A substance made up of only one kind of atom is an element, which is a pure substance.
An Element is the substance consisting of only one type of atom
An element is a substance that contains only one kind of atom, characterized by a specific number of protons in its nucleus. Each element has unique chemical properties based on the number of protons in its atoms.
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.
element
This is an isotope of a chemical element.
element
hydrogen