Understanding Electroplating

What is the primary purpose of electroplating?

• To change the color of the metal object

• To enhance electrical conductivity

• For decorative purposes and to prevent corrosion

• To increase the weight of the metal object

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NGSS.HS-ETS1-3

Which metal is commonly used for its high corrosion resistance in electroplating?

• Iron

• Aluminum

• Copper

• Chromium

What is the process called when zinc is electroplated onto steel or iron?

• Chromization

• Anodization

• Cathodization

• Galvanization

Tags

NGSS.HS-PS2-5

In an electrolytic cell used for electroplating, what is the electrode called where oxidation occurs?

• Cathode

• Electrolyte

• Anode

• Diode

Which component in the electroplating process must be positively charged?

• The anode

• The electrolytic solution

• The metal being plated

• The cathode

Tags

NGSS.HS-PS2-5

What is the purpose of connecting the metal to be plated to the cathode?

• To make it dissolve into the solution

• To increase its mass

• To ensure it gains electrons

• To prevent it from reacting with the anode

Tags

NGSS.HS-PS2-5

What is the role of the electrolytic solution in electroplating?

• To provide a source of electrons

• To increase the conductivity between the anode and cathode

• To supply metal ions for plating

• To cool down the electrolytic cell

What is the effect of turning on the current in an electrolytic cell?

• Flow stops

• Positively charged ions move to the cathode

• The solution becomes solid

• The anode and cathode switch roles

Tags

NGSS.HS-PS2-5

What happens to the copper ions at the cathode during electroplating?

• They gain electrons and become solid copper

• They remain in the solution unchanged

• They lose electrons and dissolve

• They become negatively charged

Tags

NGSS.HS-PS2-5

Why does the anode's mass decrease in the electroplating process?

• Because it dissolves into the solution

• Because metal atoms from the anode plate the cathode

• Because it loses electrons

• Because it gains electrons