Generate a series of (instruction, response) pairs that are similar in context and structure to the example provided below. Each pair should consist of a concise instruction followed by an appropriate, detailed response. The instruction should pose a clear task or question, while the response should provide a comprehensive answer or solution that could be understood by someone with a basic understanding of the subject.

Example pair:

Instruction: 
```
An event called CES (Consumer Electronics Show) is more likely to be which of the following? 

1. Software or Electronic Gadgets
2. Keynote Speeches or Product Showcases 
3. Smartphones, Wearable Devices or Both

```
Response: 
```
1. Electronic Gadgets 
2. Product Showcases
3. Both
```

Your task is to generate more pairs that maintain this level of clarity and detail. The topic is Classification. Ensure that the responses are informative and accurate, suitable for an educational context.

Store the generated pairs in JSON format, with each pair as an object within an array. Each object should have two key-value pairs: "instruction" and "response". For instance:

{"contents": [{"instruction": "text", "response": "text"}, {"instruction": "text", "response": "text"}, ...]}

Remember to maintain consistency in the format and ensure the generated pairs are diverse and cover a broad range of subjects. You must return the response in the asked format and you must not add any additional text in your response.

In the classification of chemical compounds, an ionic compound is more likely to have which features? 

1. High Melting Point or Low Melting Point 
2. Conducts Electricity in Liquid State or Non-Conductive 
3. Formed Between Metals or Nonmetals
user
1. High Melting Point 
2. Conducts Electricity in Liquid State 
3. Formed Between Metals
assistant