CPA #5 Questions

Question 1

why is the valence shell of an atom so important?

Answer 1

determines if an atom is positive or negative due to the number of electrons ; atoms combine by sharing or transferring valence electrons

Question 2

list the special properties of water

Answer 2

1. water molecules are cohesive (stick together)
2. water is an excellent solvent
3. remains liquid across wider range of temperatures than any other molecule its size
4. can absorb significant amounts of heat energy.