IGCSE Physical Science (0652) — October–November 2023, Paper 42

A list of processes is shown: cracking chromatography fractional distillation oxidation crystallisation galvanising precipitation diffusion neutralisation reduction Use the list…

A student measures the diameter of a wire. Name an instrument used to measure accurately the diameter of the wire.

Melting points are used to assess the purity of substances. State the effect impurities have on the melting point of a sample of a substance.

A ray of light is incident on the surface of a plane mirror as shown in Fig. 4.1 (an incident ray strikes a horizontal mirror surface). On Fig. 4.1, draw and label: • the normal…

Ethanol is an alcohol. The equation for the formation of ethanol from ethene is shown: C2H4(g) + H2O(....) → C2H5OH(g) Complete the equation to show the state symbol for H2O in…

Fig. 6.1 shows an empty wheelbarrow. A vertical force of 20 N is needed to just lift the wheelbarrow off the ground; the force is applied 0.80 m from the pivot (the wheel).…

Sodium is in Group I and magnesium is in Group II of the Periodic Table. Explain why sodium is more reactive than magnesium.

Fig. 8.1 shows a cell, a resistor R and component S connected in series. The potential difference between points A and B (across S) is used to control an electrical heater. The…

Aluminium, Al, is obtained from aluminium oxide, Al2O3. The equation is: 2Al2O3 → 4Al + 3O2. Calculate the mass of Al produced from 204 tonnes of Al2O3. [Ar: Al, 27; O, 16; 1…

Fig. 10.1 shows a circuit that produces a 220 V electrical supply from a 12 V car battery, including a d.c. to a.c. converter (first stage) and a step-up transformer (12 V a.c.…

Copper has two stable isotopes, ⁶³Cu and ⁶⁵Cu. Define the term isotopes.