Metallic properties tend to increase in which direction on the periodic table

How can you use chemical equations to predict the products of the reaction you can carry out?

Which is an example of a reversible physical change?

In chemistry, the type of an atom (what element it is) is determined by: a) the number of protons it contains in its nucleus.b) the number of neutrons it contains in its nucleus.c) the number of protons it has in a cloud around the nucleus.d) the number of neutrons it has in a cloud around the nucleus.e) the number of electrons it exchanges with its neighbors.