Acids and Alkalis
1 / 28
Éléments de cette leçon
Slide 1 - Diapositive
What is a hazard?
Slide 2 - Question ouverte
Slide 3 - Diapositive
Slide 4 - Diapositive
Slide 5 - Vidéo
Slide 6 - Diapositive
Slide 7 - Diapositive
If you spill acid or alkali in class, what should you do?
Slide 8 - Question ouverte
Sort the keywords into the correct box.
Acid
Alkali
Both
Sour
Bitter
Irritant
Corrosive
Lemons
Vinegar
Toothpaste
Soap
Bleach
Wear googles
Slide 9 - Question de remorquage
Miss Buchanan dissolves 3 spoons of coffee powder in some hot water to make her morning cup of coffee.
Solute:
Solvent:
Solution:
Coffee powder
Hot water
Strong coffee
Slide 10 - Question de remorquage
A mixture of a substance (solid, liquid or gas) and a liquid.
A substance (solid, liquid or gas) that is dissolved in a liquid.
A liquid in which a substance dissolves.
Match the words to the definitions.
Solvent
Solute
Solution
Slide 11 - Question de remorquage
Slide 12 - Diapositive
Slide 13 - Diapositive
Which solution is more concentrated?
A
A
B
B
Slide 14 - Quiz
Which solution is more concentrated?
A
A
B
B
Slide 15 - Quiz
Which solution is more concentrated?
A
A
B
B
Slide 16 - Quiz
Which solution is more corrosive?
A
A
B
B
Slide 17 - Quiz
Put the acids in order from most dilute to most concentrated.
Dilute
Concentrated
Slide 18 - Question de remorquage
How could you make this solution more concentrated?
Slide 19 - Question ouverte
Slide 20 - Vidéo
Slide 21 - Diapositive
This acid is...
A
Weak
B
Strong
Slide 22 - Quiz
This acid is...
A
Weak
B
Strong
Slide 23 - Quiz
This acid is...
A
Weak
B
Strong
Slide 24 - Quiz
Match the keyword to the definition.
Lots of acid particles in less solvent.
Few acid particles in lots of solvent.
All the acid particles split up when dissolved.
Some acid particles split up when dissolved.
Concentrated
Dilute
Strong
Weak
Slide 25 - Question de remorquage
Match each diagram to the correct description.
strong & dilute
strong & concentrated
weak & dilute
weak & concentrated
Slide 26 - Question de remorquage
How would you make a dilute acid solution?
Slide 27 - Question ouverte
A pupil has a dilute solution of weak lemon juice and a concentrated solution of strong bleach. What hazard symbol should she use to label each solution? Explain your choice.
