A materials scientist tests samples of two elements, J and K.
| Element | Electron arrangement | Observations |
|---|---|---|
| J | 2.8.3 | Conducts electricity and can be rolled into a thin sheet |
| K | 2.8.6 | Does not conduct electricity and breaks when pressed |
Explain what the information shows about whether J and K are metals or non-metals and their relative positions in the Periodic Table.
Explain how the outer electrons change when J and K react, and how the resulting particles are held together.
122 exam-style questions on OCR GCSE Chemistry 2.2 Bonding, covering 2.2.1 Metals, non-metals and the Periodic Table, 2.2.2 Types of chemical bonding and dot and cross diagrams, 2.2.3 Limitations of bonding models, and 2.2.4 Reactivity, atomic number and the modern Periodic Table. Each one has a worked solution and a mark scheme showing where the marks go.