The Periodic Table does not list substances, but elements.
To explain further, the substance carbon dioxide contains the elements carbon and oxygen. It does not contain the substance oxygen (which would mean dioxygen gas -- O2 ). Similarly, the substance carbon could mean any or all of graphite, diamond, coke, or charcoal, but it is not contained in carbon dioxide.
This is called an element.
None gold is an element which can not be broken down into smaller substances.
element
Aluminium - it is an element... the rest of the substances in your list are compounds.
An element is a pure substance it can not be 3 different substances. However some elements can arrange themselves to look like completely different substances. These variations are called "Allotropes" of the element. The element Sulfur forms 30 solid allotropes, more than any other element. The next element to commonly form allotropes is the element Carbon, which forms - Soot (amorphous carbon), Graphite, Diamond, Buckminsterfullerene, Lonsdaleite, Graphine, and Carbon nanotubes.
element?
Potassium (K) is an element. Elements are substances that cannot be broken down into simpler substances by chemical means, whereas compounds are substances made up of two or more different elements chemically combined.
no
If it is an element, then by definition there is nothing else present.
Calcium is itself an element. Elements do not contain other substances.
No
Mercury is a chemical element.
does not include other substances
Titanium is an element. It is a chemical element with the symbol 'Ti' and atomic number 22. Elements are substances that cannot be broken down into simpler substances by chemical means.
Substances are Either an element or a mixture
Not: atoms The answer is an element
This is called an element.