A gas cylinder contains pressurized gas. Over time, some of the gas slowly leaks out into the atmosphere. What happens to the mass and to the weight of the gas remaining inside the cylinder?
Mass decreases, weight decreases.
Mass decreases, weight stays the same.
Mass stays the same, weight decreases.
Mass stays the same, weight stays the same.
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.