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13. METHANE GAS (CH4) IS AN EXAMPLE OF _________ COMPOUND.


14. WHEN AN ATOM LOSES AN ELECTRON , IT BECOMES A/AN ________.


15. WHEN AN ATOM GAINS AN ELECTRON, IT IONIC BONDING.



16. ______ ELEMENTS LOSE ELCTRONS IN IONIC BONDING




17. A _______ IS A TYPE OF COVALENT BOND THAT IS FORMED WHEN ELECTRONS ARE SHARED EQUALLY BETWEEN ATOMS.​