Elements and Compounds

Front

Which of the following is not a compound? Options: HCl, NaCl, Cl, CO₂

Back

Cl

Front

Which of the following represents an element? H₂O, NaCl, H₂, CaCO₃

Back

H₂

Front

Salt has a chemical formula of NaCl. Salt is a...
Options: Compound, Mixture, Element, None of the Above

Back

Compound

Front

What cannot be broken down into other substances?

Back

Element

Front

What is made up of two or more elements that are chemically combined?

Back

Compound

Front

How many elements are represented in the compound Na₂CO₃?

Back

3

Front

A combination of substances that are not chemically combined is called a(n)____________.

Back

mixture

Front

What is the picture displayed? Options: atom, molecule, element, compound

Back

compound

Front

Which example is a compound? Options: N₂, Cu, O₂, H₂O₂

Back

H₂O₂

Front

Are there any compounds on the periodic table?

Back

No, because only elements are on the periodic table.