Matter Review 8th Grade

Name the test (independent) variable when testing for maximum balloon pressure before bursting.

• pressure

• color of balloon

• brand of balloon

• time before bursting

Name the outcome (dependent) variable if testing the max pressure of a balloon before bursting.

• pressure

• whether balloon burst or not

• brand of balloon

• the time it took to burst

When a solute is dissolved in a solvent creating a clear liquid, is this chemical or physical?

• chemical

• neither chemical nor physical

• physical

• it depends

Tags

NGSS.MS-PS1-2

When a new material is formed, this is a sign that a ___________ change has taken place.

• chemical

• physical

• scientific

• temporary

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Which is an example of a physical change?

• an iron nail rusting

• silver changing into a liquid when heated

• an egg cooking

• a cake baking

If 10 ice cubes are heated to boiling in a CLOSED CONTAINER, the mass will ________.

• increase

• decrease

• stay the same

• it depends

Tags

NGSS.MS-PS1-4

True of False? When ice melts, the number of atoms remains the same.

• true

• False

Tags

NGSS.MS-PS1-4

NGSS.MS-PS1-5

Is it possible for equal volumes of different substances to have different densities?

• no, if the volume is the same, the density would be the same

• no, volume always correlates to density

• it's impossible

• yes, density is a unique physical property

Which of these are physical properties of all metals?

• malleable

• good conductors of heat and electricity

• ductile

• all answers are correct

Which of these substances would you expect to be a good conductor of electricity?

• a plastic fork

• a wooden block

• a glass jar

• a copper penny