Eduqas GCSE Chemistry · EDUQAS C210P4
2 Chemical bonding, application of chemical reactions and organic chemistry
Written & reviewed by James Millett — Biology (Imperial College London), PGCE Science (University of Cambridge).
Practice questions on Chemical bonding, application of chemical reactions and organic chemistry
- Explain why changes of state, such as melting and boiling, are described as physical chang… (4 marks, Explain)
- A student adds excess marble chips (calcium carbonate) to dilute sulfuric acid. At first b… (4 marks, Explain)
- Water exists as a solid, liquid or gas depending on temperature. Using the particle model,… (4 marks, Explain)
- Explain why the relative atomic mass of chlorine is 35.5, rather than a whole number. (4 marks, Explain)
- Iron is found in the Earth's crust as iron oxide ore. To extract iron, the ore is heated w… (4 marks, Explain)
- Zinc nitrate solution is neutral. When zinc oxide powder is added to dilute nitric acid, a… (4 marks, Explain / Describe)
- Magnesium sulfate is a salt used in medicine. It can be made by reacting magnesium carbona… (4 marks, Explain)
- Copper sulfate can be made by reacting copper oxide with dilute sulfuric acid. Describe ho… (4 marks, Describe)
- Copper can be found as a native metal in the Earth's crust, whereas aluminium is always fo… (4 marks, Explain)
- Zinc is a metal that can be extracted from zinc oxide by heating it with carbon. Explain w… (4 marks, Explain)
- Titanium is a metal used in aircraft and medical implants. It is always found combined wit… (4 marks, Explain)
- Lead is a metal that has been used by humans for thousands of years. It is sometimes found… (4 marks, Explain)
- Hydrochloric acid reacts with sodium hydroxide solution to form sodium chloride and water.… (4 marks, Explain)
- Boron has two naturally occurring isotopes, boron-10 and boron-11. The relative atomic mas… (4 marks, Explain)
- Magnesium has an atomic number of 12 and a mass number of 24. Describe the structure of a … (4 marks, Describe)
- Chlorine has two naturally occurring isotopes: chlorine-35 and chlorine-37. Explain what i… (4 marks, Explain)
- Describe the limitations of the particle model when used to explain the behaviour of subst… (4 marks, Describe)
- Magnesium has three naturally occurring isotopes: magnesium-24, magnesium-25, and magnesiu… (4 marks, Explain)
- Substance X has a melting point of 1083 °C and substance Y has a melting point of −39 °C. … (4 marks, Explain)
- Silicon has three naturally occurring isotopes: silicon-28, silicon-29, and silicon-30. Th… (4 marks, Explain)