Natron, kitchens and the Nile
Answers are for parents and teachers.
1
Write a fact card for natron with four lines.
White powder; found at desert salt lakes; takes up water; alkaline.
2
Make two lists: acids in the kitchen, alkalis in the kitchen.
For example acids: lemon juice, vinegar; alkalis: soapy water, baking soda in water.
3
Write two safety rules for using cleaning products.
Only grown-ups use strong ones; never mix products; never taste.
4
Explain in two sentences why testing river water protects fish and birds.
Strongly acidic or alkaline water harms them; tests warn us early.
5
Ask a farmer or a gardener you know why they care about the soil.
Answers differ; for example the soil decides how well the plants grow.