Covalent Bonding Exam Questions with Correct Answers

Covalent Bonding Exam Questions with Correct Answers covalent compounds are also called ______ compounds - Answer-molecular a covalent compound is a bond between _____ ____________ - Answer-2 nonmetals all nonmetals have _____ electronegativity and ______ electron affinity - Answer-high nonmetals seek to _____ electrons to make them stable - Answer-gain what is electronegativity? - Answer-tendency of an atom to attract a shared pair of electrons what is electron affinity? - Answer-ability of an atom to attract and hold additional charges what is covalent bonding an analogy of? - Answer-2 equally strong people playing tugof-war - neither can pull the rope harder than the other one what does a covalent bond form? - Answer-a molecule what is a molecule? - Answer-a neutral group of atoms that are held together by covalent bonds any time a chemical bond forms, _____ is released - Answer-energy a dash between 2 elements that are covalently bonded and written in lewis dot notation represents - Answer-a single covalent bond _______ a bond requires energy - Answer-breaking what is bond dissociation energy? - Answer-the energy required to break a bond between two covalently bonded atoms what is bond length? - Answer-the average distance (space) between two nuclei that are bonded together when bond lengths are ______, atoms are very close, and ____ energy is required to separate them - Answer-short; more large atoms have more energy levels of electrons, so there are _____ bond lengths, therefore _____ energy is required to separate atoms - Answer-longer; less what are the 7 diatomic molecules? - Answer-H2, N2, O2, F2, Cl2, B2, I2 how many valence electrons do metals have? - Answer-1-3 how many valence electrons do nonmetals have? - Answer-5-7 in a covalent bond, shared electrons fill the _____ orbitals of both atoms, making them both stable - Answer-outer what is an exothermic reaction? - Answer-energy is released as atoms move from a high energy state to a low energy state when covalent bonds form covalent bonds form because _______________________ - Answer-electrons of one atom are attracted to the positive nucleus of another atom