GRADE 7 SCIENCE

A pure substance containing only one kind of atom.

• element
• mixture
• compound

Tags

NGSS.MS-PS1-1

Can only be separated by chemical means.

• element
• mixture
• compound

This picture represents which of the following?

• element
• compound
• mixture

Tags

NGSS.MS-PS1-1

The ability of a substance to be pulled into wires

• Malleability
• Flexibility
• State
• Ductility

Physical or Chemical?  Water is nonflammable

• Physical
• Chemical
• Neither

What science process is involved when a scientist shares his findings with other scientists?

• analyzing data

• communicating results

• experimenting

• making a hypothesis

What is being described when you decide whether or not the data supports the original hypothesis?

• asking questions

• drawing conclusions

• forming hypothesis

• making observations

Tags

NGSS.MS-ETS1-3

Which change of state occurs when particles in a solid begin to move slowly past each other?

• Boiling

• Condensing

• Melting

• Subliming

When the temperature of a liquid is increased a little, what happens to its particles?

• They move so far apart becoming gas

• They come close together

• They start vibrating more

• They stop vibrating

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Which state of matter has no definite shape and no definite volume?

• Liquid

• Gas

• Solid

• Liquid and gas

Tags

NGSS.MS-PS1-4