Question 1
Specify the charge carried by anions? What happens to an atom ‘A’ if its atom gains two electrons?
(a) Specify the charge is carried by anions? What happens to an element ‘A’ if its atom gains two electrons?
(b) Classify the substances given below into elements and compounds.
NaCl, Cu, CaCO3, Zn, O2, H2O, F2, Hg, Diamond
Question 110 (iii)
Science Application An atom consists of charged particles called electrons and protons. Each proton has a charge of +1 and each electron has a charge -1. Remember the number of electrons is equal to the number of protons, while answering this question : What will be the charge on an atom, if it gains an electron?
An atom gets positive charge by gaining electrons.