Level 1 Mastery--Elements, Mixtures, Compounds

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

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

• atom

• liquid

• mixture

• compound

Tags

NGSS.MS-PS1-1

Oxygen and iron combine chemically to form rust. Rust is classified as which of the following?

• an atom.

• an element.

• a compound.

• a mixture.

Tags

NGSS.MS-PS1-1

NGSS.MS-PS1-2

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

A pure substance that cannot be separated into simpler substances by chemical or physical means.  

• Element
• Compound
• Mixture
• Chemical

Which of the following represents an element?

• H₂O
• H₂
• NaCl
• CaCO₃

This can be separated physically. 

• mixture 
• element 
• compound 

In the diagrams provided, the circles of different colors represent the atoms of different elements. Which diagram represents a mixture?

• I

• II

• III

• IV

Classify the picture with the correct label.

• Element
• Compound
• Mixture of Elements and Compounds
• Mixture of Elements

Tags

NGSS.MS-PS1-1