Directions: On the line before each statement, write T if the statement is true or F if the statement is false. If the statement is false, change the underlined word(s) to make it true. Write your changes on the lines provided. F. 1. The identity of matter changes during a physical change.

2. To change the state of matter, electrical energy must be added or removed.

3. The total mass of matter does not change during a physical change.

Physical change is a change in: 4, 5 Please I need help

the answer is na (sodium)

so what is the problem with your lab report and whats the subject of the lab report? i will you

metals are good conductor of electricity. it has free electrons on their surface. according to electron pool theory, each atom present in a metal crystal losses all of its valence electron and as a result a pool of free is form. these pool of electrons are free to move and   conduct electricity easily   while making metal as good conductor.

the correct answer is a. the ability of electrons to flow throughout the metal.

if it's not useful, feel free to report for mistake in answer.

b.false that your answer