Chemistry Chapter 2 (Form 5)

Which of the following is an organic compund?

• Carbon dioxide

• Ethanoic acid

• Potassium carbonate

• Sodium cyanid

Tags

NGSS.HS-LS1-6

• does not show any visible changes

• turns milky

• is decolourised

• turns from blue to red

• Both have the same general formula

• both undergo hydrogenation in the presence of nickel catalyst

• both decolourise bromine in the dark

• Both burn in excess oxygen to produce the same combustion products.

• 4.7g

• 9.4g

• 14.1g

• 18.8g

The compound X is?

• ethene

• ethane

• ethanol

• glucose

• 1

• 2

• 3

• 4

• it turns moist blue litmus red

• it is a colourless liquid that dissolves readily in water

• it reacts with sodium to produce a salt and hydrogen gas

• it is produced by a reaction between ethanol and buthanoic acid

Tags

NGSS.HS-LS1-6

• Methanol

• Ethanol

• Propanol

• Butanol

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

• It corrodes the protein membrane

• it neutralises the acid in the latex

• it neutralises the negative charges on the rubber particles

• It neutralises the hydrogen ions released by bacteria action.

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Tags

NGSS.HS-PS1-3