Acid-Bases-Solutions

Which of the following does NOT increase the rate of dissolving of a solid in water?

• constant agitation

• raising the temperature

• decreasing the surface area

• crushing the solid to small pieces

What determines if the solution is basic?

• A greater concentration of H+ ions than OHions

• A greater concentration of OH- ions than H+ ions.

• Equal concentrations of OH- and H+ ions

• Higher concentrations of salt.

If you crush a sugar cube, it will increase the dissolving. Why?

• Crushing decreases its surface area.

• Crushing decreases its amount.

• Crushing increases its surface area.

• Crushing increases its amount

Which of the following would help to dissolve a solute?

• Heat it up.

• Stir it.

• Crush it.

• All of the above.

LiOH is added to water to form a solution. How does adding LiOH to the water affect its pH level?

• LiOH releases oxygen ions in water, which decreases its pH level.

• LiOH releases hydroxide ions in water, which increases its pH level.

• LiOH releases hydrogen ions in water, which increases its pH level.

• LiOH releases lithium ions in water, which decreases its pH level

How would you increase the conductivity of a solution?

• Increase the concentration of ions in the solution.

• Decrease the concentration of ions in the solution.

• Increase the temperature of the solution.

• Decrease the temperature of the solution.

Tags

NGSS.HS-PS1-5

Which of the following properties did NOT change with the addition of carbon dioxide to the water?

• the pH of the solution

• the color of the solution

• the phase of the solution

• the volume of the solution

Tags

NGSS.MS-PS1-2

Which term refers to a solution to which more solute can be added at the same temperature?

• stable

• unstable

• saturated

• unsaturated

The characteristic properties of an acid are due to the presence of

• oxide ions.

• hydride ions.

• . hydroxyl ions.

• hydrogen ions.

Which factor tends to increase the solubility of a solid in water?

• lower mass

• greater volume

• reduced pressure

• higher temperature

Tags

NGSS.MS-PS1-4