1. H2O is the chemical formula of   Rust   Salt   Sugar   Water   Hint Half-n-half Clue   2. Which of the following compounds is covalent?   NH3   KCl   LiCl   MgCl2   Half-n-half Clue   3. An atom which loses an electron forms   a cation.   a polymer.   an anion.   a covalent bond.   Half-n-half Clue   4. Ionic compounds conduct electricity in   Amorphous State.   Fused state or solution state.   Powdered State.   Crystalline State.   Half-n-half Clue   5. Ionic compounds are usually   soluble in aldehydes.   soluble in ethers.   soluble in water.   soluble in alcohols.   Half-n-half Clue   6. Atoms take part in bond formation to   neutralize their charge.   attain a stable electronic configuration.   increase their energy.   increase their charge density.   Half-n-half Clue   7. Inert gases do not react with any other element because   the pressure is not high enough.   their outermost electron level is filled with 8 electrons.   the temperature is not high enough.   their nucleus is very small.   Half-n-half Clue