Scores Summary

The strength of an acid or base is dependent upon…

• how high its pH is

• how toxic it is

• how completely is dissociates or ionizes

• how stable it is

A solution with a pH of 10 would be classified as a (a)   .

• strong acid

• strong base
• weak acid

• weak base

If NaOH is added to water, what will most likely happen to the pH of the solution?

• it will increase

• it will decrease

• it will be unaffected

• it will become neutral

If HNO₃ is added to water, what will most likely happen to the pH of the solution?

• it will increase

• it will decrease

• it will be unaffected

• it will become neutral

An acidic solution has…

• a pH less than 7

• a pOH greater than 7

• more hydroxide ions than hydronium ions

If the pH of a solution increases from 5.0 to 6.0, what has happened to the hydronium ion concentration?

• It's unaffected

• It has been neutralized

• It has gone down

• It has gone up

As the hydroxide ion concentration increases in a solution, the solution…

• becomes more acidic

• becomes more basic

• becomes weaker

• is unaffected

Which of the following is not a unit for measuring gas pressure?

• psi

• kPa

• mL

• Torr

In a phase change from liquid to gas, what happens to the particles?

• They lose energy and move closer together

• They gain energy and move farther apart

• They maintain the same energy level

• They become more organized

Tags

NGSS.MS-PS1-4

A container contains three different gases, each with a pressure of 520 mm Hg. What is the total pressure of the container?

• 520 mm Hg

• 1040 mm Hg

• 1560 mm Hg

• 780 mm Hg