Periodic Table, Elements, Compounds, Mixtures

Which of the following represents an element?

• H₂O
• H₂
• NaCl
• CaCO₃

Tags

NGSS.MS-PS1-1

Which of the following is not a compound?

• HCl
• Cl
• NaCl
• CO2

Tags

NGSS.MS-PS1-1

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

• Compound
• Element
• Mixture
• None of the Above

Tags

NGSS.MS-PS1-1

1 A substance made up of two or more chemically combinedelements is —

• an element
• mixture
• compound
• solution

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NGSS.MS-PS1-1

 A substance that cannot be broken down into any other substance by ordinarychemical means is called —

• molecule
• mixture
• element
• compound

Two or more physically combined substances form —

• a compoud
• an acid
• an element
• a mixture

Tags

NGSS.MS-PS1-1

What is an example of an element?

• Oxygen
• Pure water
• Air
• Table salt

This image is a model of...

• an element

• a compound

• a homogenous mixture

• a heterogeneous mixture

Tags

NGSS.MS-PS1-1

This picture represents which of the following?

• element
• compound
• mixture of elements
• mixture of compounds

Tags

NGSS.MS-PS1-1

What does the diagram show?

• A mixture of two elements
• A pure compound
• A mixture of two compounds
• A mixture of a compound & element

Tags

NGSS.MS-PS1-1