Chapter 14/15

Which of the following substances is classified as a base according to the pH scale?

• Grapes

• Tomatoes

• Soap

• Bananas

Why are reactions involving acids and bases considered important in chemistry?

• They are only found in laboratories

• They are not related to biological processes

• They are common and encompass industrial and biological processes

• They are rare and unimportant

Which of the following is a property of acids?

• Turn litmus blue

• Taste bitter

• Turn litmus red

• Feel slippery

What happens when an acid reacts with a base?

• Only water is formed

• Only salt is formed

• Salt and water are formed

• Only hydrogen gas is formed

Which of the following best describes the taste of acids?

• Sweet

• Sour

• Salty

• Bitter

Given the reaction: HCl + NaOH → NaCl + H2O, what type of reaction is this?

• Decomposition

• Neutralization

• Combustion

• Oxidation

Why are bases considered electrolytes?

• They taste bitter.

• They conduct electricity by yielding ions.

• They are slippery to touch.

• They neutralize acids.

Tags

NGSS.HS-PS2-5

What safety concern is associated with many bases, such as lye?

• They are always safe to handle.

• They are caustic and can cause burns.

• They are non-reactive.

• They taste sweet.

Which base is also known as "milk of magnesia" and is used as a laxative and antacid?

• Ca(OH)₂

• Mg(OH)₂

• NH₄OH

• KOH

What is a strong acid?

• An acid that ionizes completely in aqueous solution and is a strong electrolyte

• An acid that partially ionizes in aqueous solution

• An acid that does not ionize in water

• An acid that only ionizes in solid form