Elements & Compounds

Which of the following is not a compound?

• HCl
• Cl
• NaCl
• CO2

Which of the following represents an element?

• H₂O
• H₂
• NaCl
• CaCO₃

What cannot be broken down into other substances?

• Compound
• Mixture
• Solids
• Element

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

• Element
• Mixture
• Compound
• Solids

Which of the following is an element?

• Carbonic Acid
• Copper
• Iron and Copper
• Water

• 1
• 2
• 3
• 4

• 1
• 2
• 3
• 4

How many elements are represented in the compound?
Na₂CO₃

• 1
• 2
• 3
• 4

Which of the following is a compound?

• Si

• CO₂

• Cl

• He

• Ti

Which of the following represents an element?

• H₂O

• HCl

• NaCl

• Au

• CaCO₃