Lesson 3 of 14
Bases around us
Show on a big screenSoap, baking soda, lime water. Which of these is a base? Tap one answer at a time.
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The idea
A substance in the basic group is a base. Soap, baking soda and lime water are all bases. A base feels soapy or slippery. Many bases taste bitter.
Lime water is not the lime fruit. Lime water is made from chuna, or calcium oxide, in water.
Step 1 of 4
- Four basic things on a shelf.
- Baking soda, washing soda, lime water, soap.
- Only one of the four is a soap.
- All four are basic. Only one is soap.
A base turns red litmus blue. A bitter taste alone does not make a base.
Try the lab to finish this lesson.