True or false: electrochemistry

Exercise and reference answers

Questions

1. Statement is true

   No

   Statement

   Rust forms a layer that protects the iron beneath.

2. Statement is true

   Yes

   Statement

   Copper patina does protect the metal beneath it.

3. Statement is true

   No

   Statement

   A bigger dry cell of the same type gives a higher voltage.

4. Statement is true

   Yes

   Statement

   Lithium batteries hold a nearly constant voltage as they run down.

5. Statement is true

   Yes

   Statement

   Calculated cell potentials are only ballpark estimates.

Instructions

Tap True or False for each statement.

Explanation