Unit 19 · Types of pesticides

Food Preservatives Presentation

ScienceSubject
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Science and Technology, Grade 10 · Chemicals used in Daily Life

Food Preservatives

Why food spoils · Two classes, three types · Ripening chemicals

By the end of this lesson you can

🧪

Define industrial chemistry and food preservatives

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Explain why food decays

⚖️

Compare first-class and second-class preservatives

🥭

Name ripening agents and their health risks

Four jobs chemicals do at home

🍚

Food: salt, sugar

🫙

Preserving food: salt, sugar, oil

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Cleaning: soap, detergent

🐀

Killing pests: rat poison, insect spray

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Presenter notes: Today we look at the chemicals in our kitchens, and especially at the ones that stop food from going bad.