Which is less reactive than sodium but cannot be extracted from its ore using carbon

• Magnesium

• Pottassium

• Zinc

• Platinum

Which react with water to form hydrogen

• Mercury

• Pottassium

• zinc

• Copper

Aluminium window frames do not corrode away because the aluminium is? [mr-63]

• not reactive enough with oxygen

• not reactive enough with water

• coated in a layer of aluminium oxide

• not capable of forming an oxide

The ions in a solution which conduct electricity are known as

• Electrolytes

• Colloids

• Electrodes

Tags

NGSS.HS-PS2-5

Metal A is more reactive than metal B. Which statement is correct?

• Electrons flow in the external circuit from A to B

• Positive ions flow through salt bridge from A to B

• Positive ions flow in external circuit from B to A.

• Electrons flow through salt bridge from B to A

This electrode in a voltaic cell gains mass

• Anode

• Cathode

The most reactive metal will be found at the

• Anode

• Cathode

In an electrochemical cell,

Which would be an accurate half-equation at the anode for aluminum?

• Al³⁺ + 3e^- --> Al

• Al --> Al³⁺ + 3e^-

• Al³⁺ --> Al + 3e^-

• Al + 3e^- --> Al³⁺

The least reactive metal will be at the

• Anode

• Cathode

Which direction do the electrons flow in wire X and which metal is oxidized?

• A

• B

• C

• D