Acids and Bases Properties and naming 2025

A substance is found to have the following characteristics:

Very bitter taste

Feels slippery to the touch

Produces OH- ions when dissolved in water

In what category would the substance be classified?

• acid

• base

• enzyme

• fatty acid

Hydroiodic acid

• HCl

• IH

• HI

• IOH

Which of these pH values represent an acid?

• 4

• 8

• 10

• 12

When acids react with metals, they produce hydrogen gas and salt.

• True

• False

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Which of the following are properties of acids?

• They conduct electricity when dissolved in water

• They taste sour

• They react with metals to produce hydrogen gas

• All of the answer choices are correct

Which of the following is a property of a base?

• bitter taste

• reacts with metals

• salty

• sour taste

Explain what happens when a strong acid and a strong base are poured into the same container.

• they form separate layers
• they mix physically but not chemically
• they break apart into separate elements
• they react chemically to form a salt and water

Which of the following is true about acids and bases?

• The lower the pH, the stronger the acid
• the higher the pH, the stronger the acid
• The lower the pH, the more neutral the acid
• The higher the pH, the weaker the base

Which statement is true when acids and bases are mixed together?

• acids become stronger
• bases become stronger
• there is no change
• they neutralize each other

Tags

NGSS.MS-PS1-2

What is the pH of a neutral substance?

• 0
• 5
• 7
• 10