Elements & Compounds

Which of the following is not a compound?

• HCl

• Cl

• NaCl

• CO2

Tags

NGSS.MS-PS1-1

Which of the following represents an element?

• H₂O

• NaCl

• H₂

• Na4ClH

Tags

NGSS.MS-PS1-1

Which of the following could be a symbol on the periodic table or elements?

• JZ

• Jz

• jz

• JZa

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

• Mixture

• Element

• None of the Above

What cannot be broken down into other substances?

• Compound

• Solids

• Mixture

• Element

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

• Element

• Compound

• Mixture

• Solids

Tags

NGSS.MS-PS1-5

Which of the following an element?

• Carbonic Acid

• Iron Copper

• Copper

• Water

• 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

Na₂CO_{3 ?}

• 1

• 2

• 3

• 4

Tags

NGSS.MS-PS1-1