Stem 2021 (topic 8)

 Background

It is important for you to understand the basics of pH before beginning this topic.

 Here are some questions you may want to discuss before getting started:

What is pH? PH is a scale used to specify the acidity or basicity of an aqueous solution.

How do you measure pH?

What is the scale pH is measured on?

What pH level does water have? Is water acidic, basic, or neutral?

What is the most acidic pH level?

What is the most basic pH level?

All liquids are acid hydrogen ions=acid

hydroxide=

Acid

1.water

2.Hydroclorid acid

3.Wine

4.cocola

Aim or purpose:Test the ph levels in different household products.

Equipments

well plate

ph strips litmus paper

Ph chart table 1 to 14

Dropper

Products

Baking soda

Distilled water

Window cleaner

Red litmus=acid

Blue litmus=base