SSA

According to the table, which of these substances is basic? (SC.8.P.8.8)

• rain water

• distilled water

• drain cleaner

• soda water

Tags

NGSS.MS-PS1-2

An extremely strong base would have a pH of:

• 1

• 7

• 9

• 14

What might happen if you mixed a strong acid with an equally strong base?

• You would see an explosive chemical reaction.

• The acid would destroy the base.

• The base would destroy the acid.

• You'd wind up with a pH-neutral substance.

Tags

NGSS.MS-PS1-2

How does the picture relate to the particles in a solid?

• The cars are driving fast and switching lanes like the particles in a solid.

• The cars are sliding past each other while driving the speed limit like the particles in a solid.

• The cars are moving so fast you cannot even see them like the particles in a solid.

• The cars are barely moving like the particles in a solid.

What is true of all physical changes?

• new substance is formed.

• substance is altered in size, shape or form.

• Something has to break.

• Something has to be folded.

What happens when you add energy to a liquid? (SC.7.P.11.1)

• Melting and it will turn into a

  solid.

• Freezing and it will turn into a

  solid

• Evaporation and it will turn into a

  gas.

• Condensation and it will turn into a

  gas.

Tags

NGSS.MS-PS1-4

The table shows the volumes of different samples of liquid. Which sample has the lowest DENSITY?

• A

• B

• C

• D

Tags

NGSS.MS-PS1-2

Which of the following properties of an object DOES NOT CHANGE if you cut it in three equal parts?

• its mass

• its volume

• its density

• its weight

Johnny accidentally drops his toy dinosaur into a graduated cylinder. The dinosaur has a mass of 20 grams and the water level in the cylinder rises from 51 ml to 56 ml. Determine the density of the toy dinosaur.

(The formula for density is D = m/V)

• 0.5 g/l

• 55 g/ ml

• 4 g/ ml

• 2 g/ ml

Answer explanation

D = m/V

D = 20g / (56 ml - 51 ml)

D = 20/5

D = 4 g/ml

Gordon throws a baseball into the air. It rises, stops when it reaches its greatest height, and then falls back to the ground. At what point does kinetic energy convert to potential energy?

• when the baseball is rising

• when the baseball is falling

• just after the baseball hits the ground

• while the baseball is stopped in the air

Tags

NGSS.MS-PS3-2