Atoms and Compounds

How many elements are represented in the compound?
Na₂CO₃

• 1
• 2
• 3
• 4

Tags

NGSS.MS-PS1-1

Which of the following is not a compound?

• HCl
• Cl
• NaCl
• CO2

Tags

NGSS.MS-PS1-1

Does this picture show a compound?

• No
• Yes

Tags

NGSS.MS-PS1-1

Can compounds be found in the periodic table?

• Yes
• No

How many carbon atom/s are present in the compounds CaCO₃?

• 1
• 2
• 3
• 4

Tags

NGSS.MS-PS1-1

Which of the following represents an element?

• H₂O
• H₂
• NaCl
• CaCO₃

Tags

NGSS.MS-PS1-1

Salt water boils and the water completely evaporates, salt (NaCl) is left in the bottom of the beaker. Which of the following is left in the beaker?

• Compound
• Element
• Mixture
• None of the Above

Tags

NGSS.MS-PS1-4

How many Capital or Uppercase letters can one element have?

• 5

• 1

• 3

• 2

How many elements are in this compound?

B₆Cl₂OH

• 4

• 3

• 2

• 1

Tags

NGSS.MS-PS1-1

Which of the following diagrams illustrates a compound?

• 
• 
• 
• None of the above

Tags

NGSS.MS-PS1-1