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- Copper's exact………. (discover) isn't known, as people found it very long ago.
- It ………. (characterize) by its distinct reddish-brown color and bright shine.
- Copper is very………… (bend ), so it can be easily shaped into wires and thin sheets.
- It is an ………. (excel) material for electric wires because it carries power well.
- Copper has high ……… (thermally) conductivity, meaning it quickly moves heat, good for cooking pans.
- It shows good ……… (resist) to rust and damage from water or air.
- Copper often ……… (mix) with other metals to create stronger materials like brass and bronze.
- Because of its properties, copper is very ………. (use) in plumbing, roofing, and many electronic devices.
- Copper is very ………. (recycle), which helps save natural resources and protect the environment.
- You can find pure copper …………. (nature) in rocks, not just as part of other minerals.