MEDIUM
MYP:4-5
IMPORTANT
Earn 100

Alkenes and organic compounds with carbon-carbon triple bonds, called alkynes, are considered unsaturated.

Suggest the meaning of 'unsaturated' in this context. Why is unsaturated 'margarine' considered a healthy choice?

Important Questions on Does Organic Chemistry Mean We Can Make Any Substance We Want?

MEDIUM
MYP:4-5
IMPORTANT

Alkenes and organic compounds with carbon-carbon triple bonds, called alkynes, are considered unsaturated.

Predict the names of the first six compounds in the alkyne homologous series.

MEDIUM
MYP:4-5
IMPORTANT

Alkenes and organic compounds with carbon-carbon triple bonds, called alkynes, are considered unsaturated.

Deduce the reactivity of alkynes compared with alkanes, given the following information: alkynes are not necessarily more reactive than alkenes with the same number of carbon atoms, but alkenes are more reactive than saturated hydrocarbons (alkanes) with the same number of carbon atoms.

MEDIUM
MYP:4-5
IMPORTANT
Suggest why, when making ethanol using an addition reaction, a high temperature (300 0C) and a high pressure (70 atmospheres) are used during hydration.
MEDIUM
MYP:4-5
IMPORTANT
Antifreeze, used in the radiators of cars in cold climates contains ethylene glycol (1,2-ethane-diol), a kind of alcohol. Suggest why this compound is preferred to methanol (CH3OH).
MEDIUM
MYP:4-5
IMPORTANT
List the first six compounds in carboxylic acids in homologous series.
MEDIUM
MYP:4-5
IMPORTANT
Formulate equations to show the reactions between ethanoic acid (CH3COOH) and magnesium, calcium oxide, sodium carbonate, and sodium hydroxide.
MEDIUM
MYP:4-5
IMPORTANT
During the19 century, 'vinegar plants' were added to fermenting fruit in water or fruit juice to produce vinegar in the home. These organisms need to be kept in the dark and need oxygen. Identify the type of organism that the 'vinegar plant' actually was.
MEDIUM
MYP:4-5
IMPORTANT
State the name of a carboxylic acid that has an alkyl group, R, consisting of five carbon atoms.