Chemistry · BGCSE / Bonding and structure
StructuredPast exam questionForm 5 · BGCSE
The structures of six substances are shown: A ammonia (NH₃); B sodium nitrate; C carbon dioxide (O=C=O); D nitrogen (N≡N); E potassium iodide; F sodium chloride. Use the letters A to F to answer the questions. Each letter may be used once, more than once or not at all.
- aWhich substance is an element? [1]
- bWhich substance is the most abundant in air? [1]
- cWhich substance is a salt which contains three elements? [1]
- dWhich substance dissolves in water to form a solution that gives a white precipitate with aqueous silver nitrate? [1]
- eWhich substance dissolves in water to give a solution of pH 4? [1]
You'll mark your own answer against the marking guide when you hand it in.
Source: BEC BGCSE Chemistry 2019, Paper 3, Question 1
Report a problem
More like this
- The metals sodium and magnesium are found in period 3 of the Periodic Table. Sodium reacts with halogens to form sodium halides. The equation between…
- Carbon reacts with oxygen to form carbon dioxide.
- Water is a molecular compound. It has intermolecular forces and intramolecular forces.
- Silicon(IV) oxide is an acidic oxide. It is similar in structure to diamond.
- Chlorine reacts with sodium: 2Na(s) + Cl₂(g) → 2NaCl(s). The diagram shows part of the lattice structure of sodium chloride.
- The diagrams represent the structures of two allotropes of carbon, X (a 3-D network of atoms each joined to four others) and Y (flat layers of hexago…
- The structures of silicon(IV) oxide (each Si bonded to four O atoms in a giant network) and carbon dioxide (O=C=O) are shown. Silicon(IV) oxide has a…