2425_Cycle 4 - Acids, Bases and Salts

Open Ended

Why does lemon taste sour?

Multiple Choice

Coffee taste bitter.

Does that mean coffee is a basic solution?

• YES

• NO

Multiple Select

How do we classify an acidic, a basic and a salt solution?

• by tasting the solution

• using Indicators

• using the pH Scale

Multiple Choice

What does pH mean?

• The concentration of hydrogen ions in a solution

• The strength of an acid or base in a solution

• The measure of a solution's acidity or basicity

• The ability of a substance to conduct electricity

Match

PhET Activity: Acids or Bases

Classify whether each of the following is an acidic or basic solution.

• Battery acid

• Drain cleaner

• Hand soap

• Milk

acidic

basic

basic

acidic

• acidic

• basic

• basic

• acidic

Multiple Choice

PhET Activity: Acids or Bases

Is the pH of 0.20 L of blood acidic or basic?

• Acidic

• Basic

Multiple Choice

PhET Activity: Acids or Bases

Is the pH of 0.40 L of chicken soup acidic or basic?

• acidic

• basic

Multiple Choice

What happens to the pH level of orange juice when water is added?

• The pH level remains the same.

• The pH level decreases (becomes less basic).

• The pH level increases (becomes more basic).

• The pH level becomes acidic.

Multiple Choice

What happens to the pH level of hand soap when water is added?

• The pH level increases (becomes more basic).

• The pH level decreases (becomes more acidic).

• Becomes neutral

Poll

Skills Checklist!

I CAN identify the physical properties of acids, bases, and salts.

• Absolutely!

• Yes, but I have few clarifications in mind.

• No. I don't understand it at all.

Poll

Skills Checklist!

I CAN classify solutions as either acids, bases, or neutral.

• Absolutely!

• Yes, but I have few clarifications in mind.

• No. I don't understand it at all.

Open Ended

Today I learned that . . .