Acids & Bases

Vinegar tastes sour, and is often used to corrode away stains and grime.

State whether vinegar is an acid.

• True

• False

Baking soda tastes bitter, rather than sour, and reacts with acids.

State whether baking soda is an acid.

• True

• False

Cola corrodes teeth and will react with metals, such as coins.

State whether cola is an acid.

• True

• False

Name the ion that is always released by an acid in solution.

• Iron ions

• Hydroxide ions

• Hydrogen ions

• Chloride ions

Tags

NGSS.MS-PS1-5

You are given an unknown solution, and told to do some experiments to check whether it is an acid.

Propose a simple test you could perform to see if the solution is an acid.

• Mix the solution with another

• Test solution with lemon juice

• Drink the solution

• Test solution with litmus paper

Select the correct term for the following definition:

"A base that dissolves in water."

• Alkali

• Allotropes

• Periodic table

• Nanoparticle

Select the correct term for the following definition:

"A substance that releases hydroxide ions."

• Metalloid

• Base

• Acid

• Carbonate

Select the correct term for the following definition:

"OH⁻, formed by bases."

• Acid

• Hydrogen ion

• Base

• Hydroxide ion

Select the correct term for the following definition:

"A common indicator that turns red for an acid and blue for a base."

• Acid

• Base

• Alkali

• Litmus paper

Select the correct term for the following definition:

"A scale used to measure the concentration of H⁺ ions in a solution."

• Acid

• Power of hydrogen

• pH

• Base