Where are metals extracted from?
Choose one correct answer.
- rocks
- ores
- elements
What is an ore?
Choose one correct answer.
- a mineral
- a metal
- a catalyst
Which element is often used to extract some metals from their ores?
What is reduction?
Choose one correct answer.
- gain of electrons
- loss of electrons
- gain of oxygen
Pick another correct definition of reduction.
Choose one correct answer.
- loss of electrons
- gain of oxygen
- loss of oxygen
- Metals are found in nature, but they form compounds with other elements. What are the main compounds that contain metals?
- Choose one correct answer.
- oxides
- metalloids
- carbonates
What would you call a compound of zinc with oxygen?
Choose one correct answer.
- zinc oxygen
- zinc oxide
- zind oxidide
What does reduction with carbon involve?
Choose one correct answer.
- heating with carbon
- cooling with carbon
- scraping with carbon
What is the carbon compound that forms during metal extraction?
Choose one correct answer.
- carbon trioxide
- carbon dioxide
- carbon monoxide
What is an alternative method for metal extraction for metals when carbon reduction does not work?
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