Which of the following substances is a base? 5 points
a. Vinegar
b. Ammonia
c. Lemon juice
d. Distilled water

Complete the table for ion charge based upon their losing or gaining electrons in the outer shell. (use the periodic table as necessary.) group most likely ionic charge # of valence electrons i +1 ii +2 iii +3 iv +4 or -4 v -3 vi -2 vii -1 viii 0

The diagram below shows the movement of particles. what does this piece of evidence best support? the collision theory the maxwell-boltzmann distribution the effect of pressure on reaction rates the effect of temperature on reaction rates

Nan element’s square on the periodic table, the number with the greatest numerical value represents the