Indicators and pH (Amelia)

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Slide 1: Video
ScienceLower Secondary (Key Stage 3)

This lesson contains 33 slides, with interactive quizzes, text slides and 1 video.

Items in this lesson

Slide 1 - Video

Slide 2 - Slide

Slide 3 - Slide

Slide 4 - Slide

Slide 5 - Slide

Most often scientist will use universal indicator as a first choice. Why do you think it is more popular?

Slide 6 - Open question

Slide 7 - Slide

Slide 8 - Slide

What did your results tell you about the chemicals we tested yesterday?
Acid
Alkali
Coca Cola
Vinegar
Hydrochloric acid
Sodium hydroxide
Shower gel

Slide 9 - Drag question

Name a weak acid

Slide 10 - Open question

Name a strong acid

Slide 11 - Open question

Name a weak alkali

Slide 12 - Open question

Name a strong alkali

Slide 13 - Open question

What is this substance?
A
Strong acid
B
Weak acid
C
Strong alkali
D
Weak alkali

Slide 14 - Quiz

What is this substance?
A
Strong acid
B
Weak acid
C
Strong alkali
D
Weak alkali

Slide 15 - Quiz

What is this substance?
A
Strong acid
B
Weak acid
C
Strong alkali
D
Weak alkali

Slide 16 - Quiz

1. Which one(s) are acidic?
2. Which one(s) are neutral?
3. Which one(s) are alkaline?
4. What is the difference between A and C?

Slide 17 - Open question

Match the keywords to the diagram.
Acid
Alkali
Neutral
Weak
Weak
Strong
Strong

Slide 18 - Drag question

Why might it be difficult to test a leaf with universal indicator?

Slide 19 - Open question

Slide 20 - Slide

Slide 21 - Slide

What is the pH of:
a. An acid?
b. An alkali?
c. A neutral substance?

Slide 22 - Open question

pH 2
A
Strong acid
B
Weak acid
C
Neutral
D
Weak alkali

Slide 23 - Quiz

pH 10
A
Strong acid
B
Weak acid
C
Neutral
D
Weak alkali

Slide 24 - Quiz

pH 7
A
Strong acid
B
Weak acid
C
Neutral
D
Weak alkali

Slide 25 - Quiz

pH 6
A
Strong acid
B
Weak acid
C
Neutral
D
Weak alkali

Slide 26 - Quiz

Solution            Colour         pH
pH 14
pH 4
pH 1
pH 10
pH 7
Purple
Red
Green
orange
Blue

Slide 27 - Drag question

Sort the keywords into the correct box.
Acid
Alkali
Sour
Bitter
pH 10
pH 1
Red - Orange
pH 5
pH above 7
pH 8
Blue- Purple
pH Below 7

Slide 28 - Drag question

A pupil adds water to an alkaline solution. What will happen to the pH?

Slide 29 - Open question

You have two unlabelled beakers. One contains a strong acid and one contains a weak acid. How could you identify which is which?

Slide 30 - Open question

Slide 31 - Slide

Hydrangeas are biological indicators. What do you think that might mean?

Slide 32 - Open question

Look at your results table. Use the diagram to estimate the pH of each substance.

Slide 33 - Slide