Properties of Water Day 3

Match

Match the following

• pH=1

• pH=14

• pH=6.9

• pH=7.1

• pH=7

Strong Acid

Strong Base

Weak Acid

Weak Base

Neutral

• Strong Acid

• Strong Base

• Weak Acid

• Weak Base

• Neutral

Hotspot

Which of the following would be considered an ACID?

CHOOSE THREE

Multiple Choice

According to the pH range which substance is more acidic than lemon juice

• Hydrochloric acid
• cabbage
• milk

​Concentration example

To be legally called chocolate, the minimum amount of cocoa content depends on the type of chocolate and regional laws. In the U.S., the Food and Drug Administration requires at least 10% chocolate liquor (cocoa solids and cocoa butter combined) for milk chocolate and 15% to 35% for dark/sweet chocolate.

Multiple Choice

To be more concentrated, this will drink will need

• ice

• more water

• more water and more powder

• more powder

Multiple Choice

To make the drink less concentrated

• add ice

• increase the amount of water

• increase the amount of powder

• freeze it

Multiple Choice

Solution A is 61 grams salt/50 ML water

Solution B is 21grams salt/50mL water

Solution C is 41 grams salt/50 mL water

Put them in order from most concentrated to least concentrated.

• A, B, C

• A, C, B

• C, B, A

• C, A, B

Dropdown

When tested with litmus paper, an acid turns the paper​ ​ ​

Select answer

Dropdown

When tested with litmus paper, a base turns the paper​ ​

Select answer

​ ​

Dropdown

When tested with litmus paper, a neutral substance turns the paper​ ​

Select answer

​ ​

Multiple Choice

When you combine equal volumes of an acid with a pH of 1 and a base with a pH of 10, what will the resulting pH be?

• Around 7

• Around 8

• Around 5

• Around 6

Summary/Quickwrite: You have two mystery substances. One is water. The other is a scentless, colorless, but highly dangerous acid. Propose a safe way to distinguish between the two.