Acids and Bases Review

A hydrogen ion, H⁺, is the same as a(n):

• neutron
• electron
• proton
• hydroxide ion

Tags

NGSS.MS-PS1-1

OH^- is called the:

• hydrate ion
• hydrogen ion
• hydronium ion
• hydroxide ion

Which food is the most acidic?

• bananas
• lemon juice
• orange juice

If an acid is combined with a base of equal strength, the result will most likely be

• a neutral solution.
• a stronger acid.
• impossible to tell without testing the pH.
• a stronger base

Tags

NGSS.MS-PS1-2

Litmus paper can be used to determine the _______ of a substance.

• relative volume
• temperature
• relative pH
• chemical formula

Carrie's teacher hands out test tubes filled with different chemicals and tells the students to identify their liquid as an acid, base, or neutral chemical. Carrie's test tube contains a clear chemical. She adds phenolpthalein to her test tube and gently moves the tube from side to side. A few moments later, the chemical in the test tube turns bright pink.
What type of chemical does Carrie have?

• Carrie has a neutral chemical.
• Carrie has an acidic chemical.
• Carrie has a basic chemical.
• The type of chemical Carrie has cannot be determined.

Tags

NGSS.MS-PS1-2

Human blood has a pH between 7.35 and 7.45. Which of the following best describes human blood?

• strongly acidic
• slightly acidic
• strongly basic
• slightly basic

Tags

NGSS.MS-PS1-2

Tastes bitter.

• Acids
• Bases
• Salts
• All

What methods can you use to measure the pH of a solution?

• Observing color or clarity
• Measuring mass or volume
• Measuring density or electrical conductivity
• Using acid base-indicators or pH meters

Which of these pH values would indicate that a solution is a weak base?

• 4
• 5.6
• 8
• 13