A student uses a spring balance to measure a piece of copper. The reading on the scale is recorded. The student then replaces the copper with a piece of plastic and observes that the spring balance shows the exact same reading.
Which quantity must be the same for the piece of copper and the piece of plastic?
density
volume
temperature
weight
209 exam-style questions on CIE IGCSE Physics Mass and weight, covering Mass and weight. Each one has a worked solution and a mark scheme showing where the marks go.