Presentation on theme: "Answer: IONIC; It has a very HIGH melting point that is characteristic"— Presentation transcript:
1 Answer: IONIC; It has a very HIGH melting point that is characteristic #39 The melting point of a compound is 1240 degrees C. Is thisCompound most likely an ionic or molecular compound?Answer: IONIC; It has a very HIGH melting point that is characteristicOf ionic compounds. Think of Table salt as an example. ItMelts at very high temperatures.Molecular compounds are easy to melt. Think of butter forExample.
2 #40 Identify the number and kinds of atoms present in a Molecule of each compound:a. C6H8O6 Has 6 carbons, 8 hydrogen's, and 6 oxygen's.C12H22O11 Has twelve carbons, twenty two hydrogens, andEleven oxygensC7H5N3O6 has seven carbons, five hydrogens, three nitrogensAnd six oxygens
3 41. Which of the following gases in Earth’s atmosphere Would you expect to find as molecules and which asIndividual atoms? Explain.Nitrogen Nitrogen would be found as N2 with a tripleCovalent bond.b. Oxygen Oxygen would be founds a O2 with a doubleCovalent bond.c. Argon Argon never bonds with anything including itselfSo you would expect it to be individual atoms.
4 #42 Explain why neon is monatomic but chlorine is diatomic. Neon is monatomic (means one atom) because it is a noble gasAnd doesn’t bond with anything.Chlorine is diatomic (meaning two atoms) Cl2 becauseEach chlorine needs one electron to fill its outer valence shellIt does so by sharing one electron with another chlorine.
5 1.0 .4 2.0 NON-POLAR VERY POLAR IONIC SLIGHTLY POLAR IONIC COVALENT #43 Classify the following compounds as ionic or covalentNon-polar (totally equal sharing)Ionic (totalTransfer)18.104.22.168NON-POLARVERY POLARIONICSLIGHTLY POLARIONICCOVALENT
6 H - O H - S Mg - Cl 1.0 2.0 .4 Na - S NON-POLAR VERY POLAR IONIC #43 Classify the following compounds as ionic or covalentNon-polar (totally equal sharing)Ionic (totalTransfer)H - OH - SMg - Cl1.02.0.4Na - SNON-POLARVERY POLARIONICSLIGHTLY POLARIONICCOVALENT
7 IONIC is a transfer of electrons #44 Describe the difference between an ionic and a covalent bond?IONIC is a transfer of electronsCovalent is a sharing of electrons
8 #45 How many electrons do two atoms in a double bond Covalent bond share? How many in a triple covalent bond?Double bondShares fourtriple bondShares six
9 #46 Write plausible electron dot structures for the following Substances. Each substance contains only single covalent bonds.I2OF2H2SNI3
10 #47 Characterize a coordinate covalent bond and Give an example:A coordinate covalent bond occurs when one atomSupplies both of the electrons in the bond. In this exampleNitrogen supplies both electrons to the hydrogen that comesin to bond.In this example fluorineBrings in both electronsTo bond with Boron.
11 #48 Explain why compounds containing C – N and C – O single bonds can form coordinate covalent bondsWith H+ but compounds containing only C – H andC – C single bonds cannot.In the case of C – N bonds andC – O bonds, an unshared pairOf electrons can exist to allowAnother atom to bond withoutBringing in two of its own.C – H and C – C bonds don’tUsually have unshared pairs toBond with.
12 #49 Using electron dot structures, draw at least two Resonance structures for the nitrite ion (NO21-)