element vs. compound

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
• H₂
• NaCl
• CaCO₃

Tags

NGSS.MS-PS1-1

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

• Element

• Compound

• Homogeneous Mixture

• Heterogeneous Mixture

Tags

NGSS.MS-PS1-1

• Element

• Compound

• Homogeneous Mixture

• Heterogeneous Mixture

Tags

NGSS.MS-PS1-1

• Element

• Compound

• Homogeneous Mixture

• Heterogeneous Mixture

Tags

NGSS.MS-PS1-1

Is salt (NaCI) a compound or a element

• Compound

• element

Tags

NGSS.MS-PS1-1

What is the picture displayed?

• atom

• element

• molecule

• compound

Which changes MUST happen for elements to become a compound?

• elements are heated

• a gas becomes a liquid

• elements dissolve in water

• chemical bonds form between atoms.

Tags

NGSS.MS-PS1-5