PH and indicators.

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Presentation transcript:

pH and indicators

Acids and Alkalis What are they? Where have you heard of them? Do you know any examples?

Indicators Indicators are used to measure the pH of something. pH is how acidic or alkali something is. Safety?! 10 Minutes

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

Hypothesis Acid Neutral Alkali

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

Acids and Alkali Intro http://www.glowscience.org.uk/mindmap#!/chemistry/reactions/acids_and_bases

http://www.bbc.co.uk/schools/ks3bitesize/science/chemical_material_behaviour/acids_bases_metals/activity.shtm What I already know What I want to know What I learned

BrainPop http://www.brainpop.com/science/matterandchemistry/phscale/

Activities http://www.bbc.co.uk/schools/ks3bitesize/science/chemical_material_behaviour/acids_bases_metals/activity.shtml http://www.bbc.co.uk/schools/ks3bitesize/science/chemical_material_behaviour/ph_experiment/activity.shtml

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