Question

1. A change in which a substance retains its identity is a_____ [physical/chemical] change
2 Matter is added or removed during a_____ [chemical/physical] change.
3. Energy required for completion of a physical change is _____[released/absorbed]
when the change is reversed.
4. Dissolution of lead nitrate in water is deemed as a_____
[physical/chemical] change
5. A change in which matter undergoes a change but the total mass of substance
unaltered is a_____
[physical/chemical] change.​

Answer 1

$<p</p><p>style="color:cyan;font-family:cursive;background:</p><p>black;font-size:25px:">(1)Physical (2)Chemical (3)released (4)Chemical (5)Physical$

Answer 2

Answer:

huehheususyysyshsgegdhyeyshshshshshehehdhehehh physical change