LEAP 2025 Science Grade 8 Chapter 9

LEAP 2025 Science Grade 8 Chapter 9 Sample

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3.

Salicylic acid, used in aspirin, is a

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4.

The image represents the molecule caffeine found in some coffees and teas. Name the elements which make up this molecule.

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5.

The image represents polyvinyl chloride. Polyvinyl chloride (PVC) is made by combining carbon, hydrogen and chloride monomers into chains forming carbon-to-carbon bonds. This process is called __.

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6.

Explain why "smart polymers" would be of benefit to us? Give an example.

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7.

Natural rubber and synthetic rubber have something in common even if one is from a natural source and the other is made in a laboratory. They are both