Elements and Compounds

The smallest particle of matter that makes up an element and a compound?

• Element

• Chemical

• Atom

• Substance

Which statement best describes an element?

• pure, made of more than one type of atom

• when combined, a chemical reaction forms

• pure, made of only one type of atom

• can be broken down easily

Which one can be found on the periodic table?

• Compound 
• Element

Helium (He) is an example of an:

• Element

• Compound

• Solution

• Mixture

Examples are water (H₂O) and carbon dioxide (CO₂).

• elements

• compounds

When two or more different elements chemically combine, a __________________________ is formed.

• element

• compound

• mixture

• solution

This picture represents which of the following?

• element

• compound

• Element
• Compound

Which of the following represents an element?

• H₂O
• H₂
• NaCl
• CaCO₃

A section of the Periodic Table is shown. What is the Chemical Symbol for Magnesium?

• 12

• Magnesium

• 24.31

• Mg