Solubility

At 30'C, which substance has the lowest solubility?

• KNO3

• KBr

• NaCl

• Yb2(SO4)3

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-4

At which temperature do KBr and KNO3 have the same solubility?

• 60

• 55

• 50

• Never

Tags

NGSS.HS-PS1-5

Solution where more solute can still be dissolved at the given temperature. 

• Saturated
• Unsaturated
• Mixture
• Homogeneous solution

When a solvent contains as much of the solute as it can hold, the solution is said to be

• supersaturated
• diluted
• saturated
• unsaturated

Darla put some sugar in a pitcher of iced tea.
 

Why is Darla stirring the iced tea? 

• Stirring makes the iced tea colder
• Stirring makes the sugar dissolve more quickly
• Stirring keeps the sugar from forming into larger pieces
• D - The sugar will not dissolve unless she stirs the iced tea

Rey is making soup. He will dissolve cubes of instant soup mix in hot water.
How can Rey make the soup cubes dissolve more quickly in the water? 

• use less water
• use more water
• add ice cubes to cool the water
• break the soup cubes into smaller pieces

Tags

NGSS.HS-PS1-5

Hana put the same amount of salt into these two beakers of water. She stirred them into the same amount of water.
 
In which beaker does the salt dissolve more quickly? 

• Beaker A because the temperature is lower
• Beaker B because the temperature is higher
• The salt dissolves at the same speed in both beakers
• The salt does not dissolve in either beaker. It sinks to the bottom

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-4