Question

a metal that remembers its shape and will revert back to it when warmed is called ______.

□ inconell

□ nitonal

rewatch

Explanation:

The question is about a metal with shape - memory property that reverts to its original shape when warmed. However, there seems to be a typo in the options. The correct term for such a metal is a shape - memory alloy (like Nitinol, which might be misspelled as "nitonal" here). Inconel is a nickel - chromium alloy with different properties, not related to shape - memory. So the intended correct option should be the one related to shape - memory, which is likely "nitonal" (assuming it's a misspelling of Nitinol).

Answer:

B. nitonal (assuming it is a misspelling of Nitinol, the shape - memory alloy)