Search over 10,000 free study notes

Positive. The neutrons found in the nucleus have a neutral charge, however the protons are positively charged. Therefore the overall charge is positive.

As you go across the period, the number of protons increases, however the amount of shielding stays the same, so attraction of outer electrons to nucleus increases and more energy is required to remove an...

First of all we have to determine how much of the acid is dissociated, which we can do by determining the concentration of Hydrogen ions. We can work that out from the pH. pH=2, which means [H⁺...

As you go down the group, what changes? The number of shells.

As you go down the group, what doesn't change? The number of electrons in the outer shell - it is always one.

For group 1, they ...

Student should know complete combustion produces CO₂ and H₂O Once products are known, equation can be balanced as:  CH₄ + 2O₂ ---> CO₂ + 2H_2<...