Which of the following is the best evidence
that digestion involves chemical change?
a time is required to accomplish results.
b the products’ mass equals the reactants’
mass.
c different compounds are involved.
d new substances are produced.

Describing intermolecular forces use the drop down menus to match the type of intermolecular force to its name dipole dipole interactions dipole induced dipole interactions london dispersion forces hydrogen bond van der waals forces done

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.

What information does a complete ionic equation give that the balanced equation doesn’t show?