Question

physical and chemical changes - 7.6c
3 questions
look back at the list of ways you could change paper. which of those were physical changes?
copy cut paste
4 which of them were chemical changes?
copy cut paste
5 which experiments from the simulation resulted in new substances? how do you know?
copy cut paste

Explanation:

Physical changes do not change the chemical composition of a substance. Cutting paper is a physical change as it only changes the shape and size of the paper without altering its chemical makeup. Copying and pasting are actions related to information - handling and not physical or chemical changes of the paper itself. Chemical changes result in the formation of new substances. Since no new substances are formed in cutting, copying, or pasting paper, there are no chemical changes among these actions. New substances are formed in chemical reactions. Without information about the simulation experiments, we can't specifically answer which ones resulted in new substances, but generally, if there are color - changes, gas evolution, precipitation formation etc., it may indicate a chemical reaction and new substance formation.

Answer:

1. Cutting paper is a physical change.
2. None of copying, cutting, or pasting paper are chemical changes.
3. No information about simulation experiments provided to answer.