Solutions, Acids, and Bases

Front

What is the pH scale?

Back

The pH scale measures how acidic or basic a substance is, ranging from 0 (very acidic) to 14 (very basic), with 7 being neutral.

Front

What pH value indicates a strong acid?

Back

A strong acid has a pH value close to 0, typically around 1.

Front

What pH value indicates a neutral substance?

Back

A neutral substance has a pH value of 7.

Front

What pH value indicates a strong base?

Back

A strong base has a pH value close to 14.

Front

What is an acid?

Back

An acid is a substance that donates protons (H+) in a solution and has a pH less than 7.

Front

What is a base?

Back

A base is a substance that accepts protons (H+) or donates hydroxide ions (OH-) in a solution and has a pH greater than 7.

Front

What is solubility?

Back

Solubility is the ability of a substance to dissolve in a solvent, typically water, at a given temperature.

Front

How does temperature affect solubility?

Back

Increasing temperatures usually increases the solubility of solids in liquids.

Front

What is a solubility curve?

Back

A solubility curve is a graph that shows the relationship between solubility and temperature for a specific substance.

Front

What is the most soluble salt at 40°C among KCl, KClO3, KNO3, and Pb(NO3)2?

Back

Pb(NO3)2 is the most soluble salt at 40°C.