Questions 1. What is the difference between the appearance of copper rod and carbon rod surface?

2. Between copper wire and pencil lead, which one can be bent?

3. Between iron and sulphur pieces, which one is malleable?

4. Which one can conduct electricity - iron, carbon or sulphur?

5. Between iron and carbon rod, which one can conduct heat?

6. Between tin and sulphur powder, which one has a higher melting point?

thanks for your helping ✨