________________ is the gain of oxygen atoms.

________________ is the loss of oxygen atoms.

Tags

NGSS.HS-LS1-7

NGSS.HS-LS2-3

What is the best way to extract metals that are less reactive than carbon?

• Bioleaching

• Electrolysis

• Phytomining

• Reduction reaction

Tags

NGSS.HS-PS1-2

Is this an oxidation or reduction reaction?

water → hydrogen + oxygen

• Oxidation

• Reduction

Tags

NGSS.HS-PS1-2

Is this an oxidation or reduction reaction?

carbon + oxygen → carbon dioxide

• Oxidation

• Reduction

Tags

NGSS.HS-PS1-2

Which of these metals do not form an ore?

• Copper

• Gold

• Iron

• Magnesium

Which element has been oxidised?

iron oxide + lithium → iron + lithium oxide

• iron

• lithium

• oxide

• lithium oxide

Tags

NGSS.HS-PS1-2

Which element has been reduced?

iron oxide + lithium → iron + lithium oxide

• iron

• lithium

• oxide

• iron oxide

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Balance the following displacement reaction.

Li₂O + __K → K₂O + 2Li

Tags

NGSS.HS-PS1-7

In the following reaction, which element has been oxidised and which has been reduced?

copper oxide + iron → iron oxide + copper

• Copper has been oxidised, iron has been reduced

• Iron has been oxidised, copper has been reduced

Tags

NGSS.HS-PS1-2