Cabbage Juice Indicator
pH and Ions
Acids
Bases
pH "Grab Bag"
100

What color will a pH of 1-3 produce when using red cabbage juice indicator?

red or pink

100

What do you call a "positive" ion?

cation

100

On the pH scale, acids fall between what numbers?

1-6

100

On the pH scale, bases are between what two numbers?

8-14

100

What does "pH" stand for?

parts Hydrogen, Hydrogen potential

200

The compound in cabbage juice that acts as an indicator?

Anthocyanin

200

Acids and bases are special kinds of __________?

solutions

200

What is the common name for "acetic acid"?

vinegar

200

What is a good description for how most bases taste?

bitter

200

A pH of 4 is ________ times more acidic than a pH of 7.

1000

300

A material with a pH of 8-9 will turn cabbage juice indicator what color?

Blue

300

Acids and bases are generally colorless and ________.

odorless

300

What acid is found in lemon juice?

citric acid

300

Bases can cause "chemical burns".  What term refers to this process?

caustic

300

When an acid and base are combined, what two products result?

water and a salt

400

What colors will indicate a strong base? (must have 2 colors)

yellow-green

400

What term refers to the process of a substance "breaking up" in water?

Dissociate

400

Acids combine with metals to produce what gas?

Hydrogen

400

Bases are good at dissolving __________ materials.

organic

400

Which base is found in cement and plaster?

Calcium hydroxide

500

What is "deprotonation"?

removal of hydrogen ions

500

What positive ion forms when a water molecule bonds with a Hydrogen ion?

Hydronium

500

What ions will acids donate (give off) when dissolved into water?

Hydrogen,  H+

500

What is sodium bicarbonate?

baking soda

500

What is the approximate pH of "rainwater"? (Hint:  rainwater is naturally acidic)

5.6

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