Nancy placed 20 drops of 1M HCl into a test tube, and then placed 20 drops of 3M HCl into a second test tube. She then cut a magnesium strip into 1 cm strips. She placed a strip into each test tube at the same time. Which
test tube should she expect for the magnesium to react faster and ultimately disappear first? Explain your
answer.

Which of the following is always a reactant in a combustion reaction? oxygen nitrogen hydrogen carbon

The table compares the number of electrons in two unknown neutral atoms. comparison of electrons atom number of electrons a 10 d 11 use this information to determine the number of valence electrons in the atoms. which of the following correctly compares the stability of the two atoms? both are unreactive. both are highly reactive. a is unreactive and d is reactive. a is reactive and d is unreactive.

The atoms of a solid aluminum can are close together, vibrating in a rigid structure. if the can is warmed up on a hot plate, what happens to the atoms?