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Science / Hygiene / Grade 7 / sy750

Hygiene: Clean or Disinfect?

Choose the task and product without improvising chemical mixtures.

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5 questions0m 0s
Learn the skill

Cleaning removes dirt and germs. Disinfecting kills germs on surfaces when needed, using a suitable product as labeled. Clean first and follow the real label. Adults manage products; never mix cleaners or use surface products on skin.

Worked example

A character sees a table-cleaning bottle and assumes it is hand soap. The intended use is different. The label and a responsible adult guide the choice, not the smell or color.

Cleaning removes dirt and germs. Disinfecting uses suitable products to kill germs on surfaces when needed. Follow the real label, including surface suitability and contact time; never mix cleaners or use surface products on skin.
Cleaning removes dirt and germs. Disinfecting uses suitable products to kill germs on surfaces when needed. Follow the real label, including surface suitability and contact time; never mix cleaners or use surface products on skin.
Question 1 What does cleaning do?
Question 2 What should happen before disinfecting a dirty surface?
Question 3 May surface cleaner be used as hand soap?
Question 4 How should contact time be chosen?
Question 5 Which action is unsafe?