pH and indicators

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pH and indicators
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Acids and Alkalis

• What are they?
• Where have you heard of them?
• Do you know any examples?

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Indicators

• Indicators are used to measure the pH of
  something.
• pH is how acidic or alkali something is.
• Safety?!

10 Minutes
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Indicators Results
Indicator Solution Colour Colour Colour
Indicator Solution Acid Neutral Alkali
Universal      
Phenolphthalein      
Methyl Orange      
Litmus      
Thymol Blue      
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Hypothesis
Acid Neutral Alkali

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• pH Hypothesis
• Stomach acid
• Drain cleaner
• Banana
• Water
• Toothpaste
• http//www.glowscience.org.uk/mindmap!/chemistry/
  reactions/acids_and_bases

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Acids and Alkali Intro

• http//www.glowscience.org.uk/mindmap!/chemistry/
  reactions/acids_and_bases

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• http//www.bbc.co.uk/schools/ks3bitesize/science/c
  hemical_material_behaviour/acids_bases_metals/acti
  vity.shtm

What I already know What I want to know What I learned

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BrainPop

• http//www.brainpop.com/science/matterandchemistry
  /phscale/

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Activities

• http//www.bbc.co.uk/schools/ks3bitesize/science/c
  hemical_material_behaviour/acids_bases_metals/acti
  vity.shtml
• http//www.bbc.co.uk/schools/ks3bitesize/science/c
  hemical_material_behaviour/ph_experiment/activity.
  shtml