Phys Sci Unit 6 Review- Solutions

Front

What does it mean if blue litmus paper stays blue when placed in a solution?

Back

The solution is a base or has a pH greater than 7.

Front

What is the pH of a bee sting?

Back

Acidic (pH < 7).

Front

How do you calculate mass concentration?

Back

Mass concentration (g/L) = mass of solute (g) / volume of solution (L).

Front

What type of solution releases H+ ions in water?

Back

Acid.

Front

How do you determine the mass of solute from mass/volume concentration?

Back

Mass of solute (g) = concentration (g/100mL) x volume of solution (mL) / 100.

Front

What is a solution?

Back

A homogeneous mixture of two or more substances.

Front

What is the difference between an acid and a base?

Back

Acids release H+ ions in solution, while bases release OH- ions.

Front

What is a buffer solution?

Back

A solution that resists changes in pH when small amounts of acid or base are added.

Front

What is the pH scale?

Back

A scale that measures how acidic or basic a solution is, ranging from 0 (acidic) to 14 (basic), with 7 being neutral.

Front

What happens to litmus paper in an acidic solution?

Back

It turns red.