7th grade Questions of the rate of Dissolution

what are the three ways of dissolution rate.

• dissolve, spin, moving

• agitation, temperature, surface area.

• agitation, surface volume, spin

which temperature will help stuff dissolve faster.

• Hot

• Cold

Tags

NGSS.MS-PS1-4

What factors can affect the rate of dissolution of a solute in a solvent? (Pick 2)

• Color and taste

• Temperature and surface area

• Smell and viscosity

• Agitation and concentration

Which will dissolve the slowest

• powdered sugar in hot water
• Powdered sugar in cold water
• sugar cubes in hot water
• sugar cubes in cold water

Tags

NGSS.MS-PS1-4

TRUE or FALSE: The bigger the pieces, the bigger the surface area and faster dissolution speed.

• True

• False

To make a solute dissolve more quickly in a solvent which would you do?

• Put it in cold water and stir it

• Put it in warm water and stir it

Tags

NGSS.MS-PS1-4

To make a solute dissolve more quickly in a solvent which would you do?

• Put it in cold water and stir it

• Put it in warm water and stir it

Tags

NGSS.MS-PS1-4

Fill in the Blank: _________ is the same as stirring

How does cold water affect the speed of dissolving?

• 
  Cold water slows down dissolving.

• 
  

  Cold water speeds up dissolving.

• 
  Cold water has no effect on dissolving.

• Cold water has no effect on dissolving.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Which would dissolve faster?

• 
  stirring sugar and water 10 times per minute

• stirring sugar and water 30 times per minute