Factors Affecting Dissolving

What combination would dissolve a solid solute the fastest?

• high temperature, no stirring

• no heat, no stirring

• sugar cube, no heat

• high temperature, stirring

Tags

NGSS.MS-PS1-4

Which factor is shown in the picture?

• temperature

• particle size

• stirring

• use of spoon

Why do sugar particles dissolve faster in hot water?

• water particles move slow

• water particles move fast

• water particles settle down

• water particles stay on top

Tags

NGSS.MS-PS1-4

How does particle size affect solubility?

• bigger particles dissolve faster

• smaller particles can occupy the space in water faster

• bigger particles spread faster than smaller particles

Stirring the solution increases or decreases the solubility?

• increases

• decreases

What would dissolve most slowly?

• Large crystals in stirred water

• Large crystals in unstirred water

• Small crystals in stirred water

• Small crystals in unstirred water

Is shaking increases the solubility of a solution?

• Yes

• No

• Maybe

Which of the following statements is true about how using smaller salt crystals would affect the rate of making a salt solution in water?

• Smaller crystals increase the surface area and slow down dissolving.

• Smaller crystals decrease the surface area and speed up dissolving.

• Smaller crystals increase the surface area and speed up dissolving.

• Smaller crystals decrease the surface area and slow down dissolving.

Tags

NGSS.MS-PS1-2

In a solid to liquid mixture, an increase in temperature means...

• increase in solubility

• decrease in solubility

Tags

NGSS.MS-PS1-4

Which will dissolve faster crushed table salt or crystal of table salt?

• crushed table salt

• crystal of table salt