elements and compounds

Which of the following substances is not a compound?

• HCl

• Cl

• NaCl

• CO2

Which of the following represents an element?

• H₂O
• H₂
• NaCl
• CaCO₃

Tags

NGSS.MS-PS1-1

Which of the following could be a symbol on he periodic table of 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
• Element
• Mixture
• None of the Above

Tags

NGSS.MS-PS1-4

What cannot be broken down into other substances?

• Compound
• Mixture
• Solids
• Element

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

• Element
• Mixture
• Compound
• Solids

Tags

NGSS.MS-PS1-1

• 1
• 2
• 3
• 4

Tags

NGSS.MS-PS1-1

Water (H₂O), is not found on the periodic table because water is a...

• atom

• liquid

• mixture

• compound

Tags

NGSS.MS-PS1-1

This image is a model of...

• an element

• a compound

• a homogenous mixture

• a heterogeneous mixture

Tags

NGSS.MS-PS1-1

This picture is a model of...

• an element

• a compound

• a homogenious mixture

• a heterogeneous mixture.

Tags

NGSS.MS-PS1-1