In class, Ricardo rips up a piece of paper. Select the correct reason(s) that this is an example of a physical change.
The paper no longer has smooth edges.
The paper has not produced a gas when torn.
The paper's chemical composition has been changed.
The paper has not changed colors.
The paper is still paper with the same chemical makeup.

Which type of bonding involves the complete transfer of a valence electron from a less electrogrative atom to a more electronegative one

What is the molar mass of potassium nitrate, kno3

Click the button that shows the correct relationship of the electron affinities of the elements sodium and phosphorus. sodium’s electron affinity value is more negative than the electron affinity value of phosphorus. phosphorus’ electron affinity value is more negative than the electron affinity value of sodium. this information cannot be determined using the periodic table. answer is b on e2020.