Periodic table

How many different elements are in this chemical formula: C₂H₂ClK₃

• 6
• 8
• 2
• 4

Which of the following chemical formulas represents a compound? 

• C₃
• O₂
• CH₃CHO
• H₂

What is water?

• element
• compound
• mixture

• Element
• Compound

• Element
• Compound

What is the name of group number 1?

• halogens

• noble gases

• alkali metals

• alkaline earth metals

What is the name of group number 2?

• transition metals

• halogens

• metaloids

• alkaline earth metals

What group number are the halogens found?

• 18 (8A)

• 1

• 2

• 17 (7A)

A row on the Periodic Table of Elements

• family

• period

• row

• isotope

The vertical columns of the periodic table are called...

• Periods

• Families

• Chemical Symbols

• Groups