An economic good is one that:
is always provided by the public sector to ensure equity.
has zero opportunity cost associated with its consumption.
is scarce and therefore incurs an opportunity cost when produced.
has an infinite supply available at any price level.
123 exam-style questions on AQA A Level Economics 1.1 Economic methodology and the economic problem, covering 1.1.1 Economic methodology, 1.1.2 The nature and purpose of economic activity, 1.1.3 Economic resources, 1.1.4 Scarcity, choice and the allocation of resources, and 1.1.5 Production possibility diagrams. Each one has a worked solution and a mark scheme showing where the marks go.