A student set up the apparatus shown in Figure 1 to investigate whether an electric current can pass through solid potassium chloride and through potassium chloride solution.
If an electrical current flows through the circuit, the lamp will light up.
Table 1 shows the results of this investigation.
| Substance | State of the lamp |
|---|---|
| Solid potassium chloride | Unlit |
| Potassium chloride solution | Lit up brightly |
Explain the results shown in Table 1.
Ionic bonding Questions
Practise Edexcel GCSE Chemistry Ionic bonding with exam-style questions for Foundation and Higher tier. 42 questions, matched to the Edexcel GCSE Chemistry (1CH0) specification and written in Paper 1 and Paper 2 style. Every question includes a full worked solution and mark scheme, so you can see where marks are awarded rather than just whether you got the answer right.