Compounds (St. Luke)

Which of the following statements best describe a compound?

• Compound is made up of only one kind of element.

• Compounds are simply chemicals that humans need to use.

• Compounds are composed of two or more different elements.

• Compounds can be separated through physical means.

Which of the following is a pure substance?

• milk

• coffee

• juice

• salt

Which of the following chemical formulas represents a compound?

• C₃

• CH₃CHO

• O₂

• H₂

What is a vinegar?

• element

• mixture

• molecule

• compound

It is made with two or more elements are chemically combined.

• elements

• mixtures

• compounds

• solutions

Compounds are represented by a ______?

• symbol

• chemical formula

• capital letter

• chemical symbol

How many elements are present in this chemical formula?

C₆H₁₂O₆

• 1

• 2

• 3

• 4

What elements are present in water?

• Carbon and Oxygen

• Oxygen and Nitrogen

• Hydrogen and Oxygen

• Hydrogen and Nitrogen

How many different elements are represented in this compound?

Fe₃O₄

• 1

• 2

• 3

• 4

What is the common name of NaCl or sodium chloride?

• sugar

• salt

• vinegar

• agua oxigenada