Elements or Compounds

Salt has a chemical formula of NaCl.  Salt is a...

• Compound
• Element
• Mixture
• None of the Above

Tags

NGSS.MS-PS1-1

A compound is a substance which contains .......

• only one type of atom
• only two types of atom
• two or more chemicals which can be easily separated
• two or more different elements chemically joined together

Which of the following is not a compound?

• HCl
• Cl
• NaCl
• CO₂

Tags

NGSS.MS-PS1-1

Which of the following is an element?

• Carbonic Acid (H₂CO₃₎
• Copper (Cu)
• Rust (Fe₂O₃)
• Water (H₂O)

Tags

NGSS.MS-PS1-1

How is a compound broken down?

• Physically
• Chemically

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

From this element key of Nitrogen, determine the atomic mass of nitrogen

(a)  

• 7
• 7.01
• 14.01
• 21.01

Tags

NGSS.MS-PS1-1

What is the atomic number of Sulfur?

(a)  

• 16
• 2
• 32.065
• 86

Tags

NGSS.MS-PS1-1

What cannot be broken down into other substances?

• Compound
• Mixture
• Solids
• Element

Is Iron (Fe) an element or a compound?

• Element
• Compound

Which of the following is an example of a chemical element?

• sodium chloride (NaCl)

• water (H₂O)

• nitrogen (N)

• glucose (C₆H₁₂O₆)