What are valence shell electrons?

5. In general, how are word equations written to describe chemical reactions?

When two fluorine atoms bond together in F2, what type of covalent bond do they form?

Which of the following elements has the fewest electrons

Hydroelectric energy is inexhaustible true or false

Phenylalanine hydroxylase is an enzyme that participates in the reaction to form tyrosine from phenylalanine. What problem would people have if they do not have this enzyme?

Identical forces act for the same length of time on two different masses. The change in momentum of the smaller mass is A) smaller than the change in momentum of the larger mass, but not zero. B) zero.

How many nuclei of 238 92 U 92 238 U remain in a rock if the activity registers 290 decays per second? (Note that the half life of Uranium-238 is 4.468x109 years)

A base can neutralize an acid. true or false

Hydrochloric acid (12.0 ml of 0.233 m) is added to 296.0 ml of 0.0579 m ba (oh) 2 solution. what is the concentration of the excess h + or oh - ions left in this solution?

Which are the organs of the digestive system