1 of 25

Acids & Bases

2 of 25

2

The University of Alberta and

Science Fundamentals respectfully acknowledge that we are situated on Treaty 6 territory, traditional lands of First Nations and Métis people.

3 of 25

OUTLINE

​

​

  • Mystery Acids & Bases
  • Indicators
  • The Shell-Less Egg
  • An Explosive Acid/Base Reaction

​

​

​

3

4 of 25

Mystery Acids & Bases

4

1

5 of 25

Acids and bases are all around us!

Acids are SOUR Bases are BITTER

​

5

6 of 25

Question Time!

  • What are some household or food items that are acids or bases?

7 of 25

There are many household examples that people use daily!

Some Common Examples:

​

7

Base:

Acid:

Base:

8 of 25

Fun Fact: the acid in your stomach helps digest your food!

8

9 of 25

Indicators!

9

10 of 25

How can we identify acids and bases?

10

Indicators: change colours to tell us if something is acidic or basic

​

Ex. litmus paper

11 of 25

Experiment Time!

11

12 of 25

Mystery Acids & Bases and the Magical Colour Changes

pH Scale: range of colours and numbers that indicate acids or bases

12

13 of 25

Red Cabbage pH scale

13

The indicator will change colour depending on the solution.

14 of 25

Question Time!

  • Which solution is an acid?
  • Which solution is a base?

15 of 25

Activity

Time!

15

16 of 25

Classroom Chemistry

16

17 of 25

Classroom Chemistry

17

If your solution turns pink it is an acid

If your solution turns blue it is a base

​

The more pink your solution is, the more acidic it is

The more blue your solution is, the more basic it is

18 of 25

Question Time!

  1. Why are the solutions changing colour?
  2. Why didn’t the cabbage juice indicator change colour when added to water?

19 of 25

  1. Indicators measure pH

-measure protons in the solution

-the indicator changes colour in response to the number of protons

​

  • Water is neutral

20 of 25

Experiment Time!

20

21 of 25

The Shell-Less Egg

  1. The egg was placed in vinegar for 3 days
  2. Egg shells are made of calcium carbonate, which is a base
  3. Vinegar is acetic acid

​

What happened to the egg in these 7 days?

21

Video Link

​

​

22 of 25

Experiment Time: Explosions!

22

23 of 25

An Explosive Acid/Base Reaction

Baking soda is a base

Vinegar is an acid

​

What will happen if these two are mixed in an acid/base reaction?

23

24 of 25

Questions?

24

25 of 25

Free templates for all your presentation needs

Ready to use, professional and customizable

100% free for personal or commercial use

Blow your audience away with attractive visuals

For PowerPoint and Google Slides