Elements vs. Compounds

A pure substance made of only ONE type of atom is called

• molecule

• compound

• element

• mixture

Is sugar (C₁₂H₂₂O₁₁) an element or a compound?

• Element
• Compound

Tags

NGSS.MS-PS1-1

Which of the following is not a compound?

• HCl
• Cl
• NaCl
• CO2

Tags

NGSS.MS-PS1-1

NGSS.MS-PS1-5

Which of the following represents an element?

• H₂O
• H₂
• NaCl
• CaCO₃

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

• Element
• Mixture
• Compound
• Solids

• 1
• 2
• 3
• 4

Tags

NGSS.MS-PS1-1

• 1
• 2
• 3
• 4

Tags

NGSS.MS-PS1-1

How many elements are represented in the compound?
Na₂CO₃

• 1
• 2
• 3
• 4

Tags

NGSS.MS-PS1-1

How many different elements are in this chemical formula: C₂H₂ClK₃

• 6
• 8
• 2
• 4

Tags

NGSS.MS-PS1-1

Which of the following atomic symbols is written correctly?

• ee
• hE
• C
• CL