Mr. Bradley' pH Acids and Bases Lesson

Students will learn who acids and bases are among the most familiar of all chemical compounds.

Students will be able to explain and demonstrate how any acid substance produces hydronium ions when dissolved in water.

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Acid, Bases, and pH

An acid is a molecule or ion capable of either donating a proton, known as a Brønsted–Lowry acid, or forming a covalent bond with an electron pair, known as a Lewis acid. The first category of acids are the proton donors, or Brønsted–Lowry acids.

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What's Acid?

What's the definition of a base?

In chemistry, a substance that can accept hydrogen ions in water and can neutralize an acid. Bases feel soapy or slippery on the skin and they can turn certain dyes blue. An example of a base is sodium hydroxide.

It is wise to eat more alkaline foods to get the best from our bodies.

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Acidic foods vs

Alkaline foods.

Multiple Choice

What is considered neutral on a pH scale?

• 9

• 14

• 0

• 7

Multiple Choice

What is considered neutral on a pH scale?

• 9

• 14

• 0

• 7

Multiple Choice

Which describes a base?

• Turns blue litmus red

• Turns red litmus blue

• pH of 7

• pH of 3

Multiple Choice

Which of the following is a base?

• orange juice

• water

• vinegar

• dishwashing detergent

Multiple Select

What is an example of an acid?

• Vinegar

• Soda

• Lemons

• Blueberries

Multiple Choice

Which of the following is an acid?

• Ammonia
• Drain cleaner
• Shampoo
• Orange

Fill in the Blank

An ___ has a lower pH

Multiple Choice

What does a pH scale do?

• Tells you if a substance is an acid.
• Tells you if a substance is a base.
• Measures the strength or weakness of an acid or base.
• All of these are true.

Multiple Select

Bases have a ___

• slippery feeling

• Bitter taste

• Sour taste

• Salty taste

Multiple Choice

You can eat or drink an acid.

• True
• False

Fill in the Blank

Acids have a ____ pH compared to bases.

Multiple Choice

Vinegar is a base.

• True
• False

Multiple Choice

Bases have a ______ pH compared to acids.

• Lower

• Higher

• neutral

• None of the above

Multiple Choice

What is another name for base?

• Phenolphtalein
• Alkaline
• Acid
• pH

Multiple Choice

Battery acid has a ____?

• High pH

• Low pH

• Neutral pH

• All the above

Multiple Choice

Which of the following describes a battery?

• Acid
• Base

Multiple Choice

Sugar has a ____?

• High pH

• Low pH

• Neutral pH

• All the above

Multiple Choice

What is the pH of distilled water?

• 1
• 4
• 7
• 11

Fill in the Blank

To determine if it's an acid or base, you look at its ___.

Multiple Choice

Which is an acid?

• Turns blue litmus red
• Turns red litmus blue
• Has a pH of 11
• Has a pH of 7

Multiple Choice

Examples of Bases are ___?

• Drain cleaner

• Soda

• Battery acid

• None of the above

Multiple Choice

When found in food, acids are ________

• Sour
• Bitter
• Salty
• Slippery

Multiple Choice

If a substance has a pH of 12, it is considered a ____?

• Acid

• Base

• Neutral

• All the above

Multiple Choice

When found in food, bases are _______.

• Sour
• Bitter
• Salty
• Soggy

Multiple Choice

If a substance has a pH of 3, it is considered a ____?

• Acid

• Base

• Neutral

• None of the above

Multiple Choice

What color does acid turn litmus paper?

• It turns litmus paper purple.
• It turns red litmus paper blue.
• It turns blue litmus paper blue.
• It turns blue litmus paper red.

Multiple Choice

If a substance has a pH of 7, it is considered a ____?

• Acid

• Base

• Neutral

• None of the above

Multiple Choice

What color does bases turn litmus paper?

• It turns litmus paper purple.
• It turns blue litmus paper red.
• It turns red litmus paper blue.
• It turns red litmus paper re

Multiple Choice

If a substance has a pH of 20, it is considered a ____?

• Acid

• Base

• Neutral

• None of the above

Multiple Choice

Drain cleaner has a pH of 13. What is drain cleaner?

• An acid.
• A strong base.
• Neutral.
• A weak base.

Fill in the Blank

what is the highest number you can go on a pH scale?

Multiple Choice

What are properties of acids?

• Bitter, slippery, ph above 7
• Sour, reacts with metals, ph below 7
• Sour, reacts with metals, ph above 7
• Bitter, ph of 7, does not react with metals

Fill in the Blank

what is the lowest number you can go on a pH scale?

Multiple Choice

A(n) ______ is a substance with a pH less than 7

• Acid
• Alkaline
• Base
• Buffer

Multiple Choice

What is the range for th pH scale?

• 0-14

• 0-15

• 0-20

• 0-18

Multiple Choice

Is this substance acidic, basic, or neutral?

• Acidic
• Basic
• Neutral

Multiple Select

What is NOT the range for th pH scale?

• 0-14

• 0-15

• 0-20

• 0-18

• All the above

Multiple Choice

The pH scale is a range from:

• 1-7
• 0-14
• 1-14
• 1-20

Multiple Choice

What is an ONE example of each?

• Purple

• Plastic

• A dog

• None of the above

Multiple Choice

pH greater than 7.

• Acids
• Bases
• All

Poll

Who is your favorite teacher?

• Mr. Onzo

• Ms. Rivera

• Ms. Powella

• Other

Multiple Choice

pH less than 7.

• Acids
• Bases
• All