Podcast
Questions and Answers
What is a characteristic of acids and alkalis?
What is a characteristic of acids and alkalis?
- They are safe to handle without precautions.
- They can attack skin or metals. (correct)
- They have no impact on human tissue.
- They are always found in solid form.
All fizzy drinks are alkaline.
All fizzy drinks are alkaline.
False (B)
What kind of damage can be caused by concentrated acid?
What kind of damage can be caused by concentrated acid?
Permanent damage on human tissue
A common example of a corrosive alkali is _____
A common example of a corrosive alkali is _____
Match the following substances with their properties:
Match the following substances with their properties:
Flashcards
Hazard in chemistry
Hazard in chemistry
Something that can cause harm in a chemical context.
Corrosive substance
Corrosive substance
A substance that can damage or destroy materials, like human skin, metal, or stone.
Acid and alkali
Acid and alkali
Hazardous substances that can be corrosive and cause harm.
Acidic foods
Acidic foods
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Permanent damage
Permanent damage
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Study Notes
Hazards in Chemistry
- Hazard means something that can cause harm
- Acids and alkalis are hazardous, found in homes
- Corrosive means they can attack skin or metals/stones
- Acids can cause permanent tissue damage (e.g., acid spills)
- Drain cleaner (alkali) is corrosive
- Dilute hydrochloric acid can irritate skin
- Concentrated acids are corrosive
- Many drinks contain natural/artificial acids (e.g., citric acid in lemons)
- Fizzy drinks are acidic
Homework
- Prepare international hazard symbols (draw or print)
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