Elements

Which of the following represents an element?

• H₂O
• H₂
• NaCl
• CaCO₃

What cannot be broken down into other substances?

• Compound
• Mixture
• Solids
• Element

How many elements are represented in the compound?
Na₂CO₃

• 1
• 2
• 3
• 4

This is made up of one or more of kind of the SAME kind of atom

• Element
• Mixture
• Compound
• Matter

Cannot be broken down into a simpler substance

• Elements

• Compounds

• Both

All known elements are listed in the _______

• Periodic Table

• Classification of Matter

• Solutions

• Pure Substance

There are ___ known elements

• 100

• 150

• 118

• 99

There are __ naturally-occurring elements.

• 99

• 100

• 105

• 90

It is the shorthand method of writing an element

• Chemical Formula

• Chemical Symbol

• Chemicals

• Pure Substance

When writing an element's chemical symbol, It must all be written in capital letters for both 1-letter symbol and 2-letter symbol

• True

• False