Anode and Cathode The electrode of a battery that releases electrons during discharge is called anode; the electrode that absorbs the electrons is the cathode. The battery anode is always negative and the cathode positive.

Nitrate is a nitrogen oxoanion formed by loss of a proton from nitric acid. Principal species present at pH 7.3. It is a nitrogen oxoanion, a member of reactive nitrogen species and a monovalent inorganic anion. It is a conjugate base of a nitric acid.

Group IV A (14) metals form cations with +4 charge, although tin (Sn) and lead (Pb) can form cations having +2 charge. Generally, metals in this group are treated similarly to the “B” elements. The non-‐metals carbon (C) and silicon (Si) generally don't form cations.

You can identify cations and anions by performing simple techniques such as the flame test and the precipitation test. These methods produce predictable flame colours and precipitates that indicate certain types of ions.

hydrophobic Answer and Explanation: Carbon dioxide is a non-polar molecule and therefore is generally considered hydrophobic.