Ch 3 Lec 1 - Chemical Compounds

Question 1

two types of chemical compounds

Answer 1

molecular, ionic

Question 2

compound of atoms bonded by covalent bonds (sharing of electrons)…usually two nonmetals

Answer 2

molecular

Question 3

compound in which atoms are bonded together by ionic bonds (transfer of electrons)… usually a metal and nonmetal

Answer 3

ionic compounds

Question 4

two types of chemical formulas

Answer 4

molecular, empirical

Question 5

chemical formula which indicates the actual numbers of each element with a subscript… example) glucose C6H12O6

Answer 5

chemical formula that is the simplest formula showing the relative amounts of elements with subscripts ex) glucose CH2O

Question 6

chemical formulas that show the order in which atoms are bonded

Answer 6

structural formulas

Question 7

chemical formulas that shorten a structural formula into a single line ex)CH3COOH

Answer 7

condensed structural formulas

Question 8

these formulas simplify organic structures by not labeling carbons and hydrogens

Answer 8

line angle formulas

Question 9

two 3d molecular models

Answer 9

ball-and-stick, space-filling

Question 10

3d molecular model where atoms represented by small balls, bonds represented by sticks and sticks imply more distance between atoms than there actually is

Answer 10

ball and stick model

Question 11

these compounds are made up of positive and negative ions bound together by electrostatic forces

Answer 11

ionic compounds

Question 12

metal loses electron to become a blank in ionic compound

Answer 12

cation +

Question 13

in ionic compound, nonmetal gains electron to become a negative blank

Answer 13

anion

Question 14

charges on the atoms can be deduced from the periodic table and help determine the blank formula of the ionic compound

Answer 14

molecular

Question 15

this is obtained by adding up atomic masses of the elements in the compound, taking subscripts into account

Answer 15

molecular mass

Question 16

amu =

Answer 16

g/mol

Question 17

list of the relative abundances of elements in a compound

Answer 17

percent composition

Question 18

percent composition formula

Answer 18

% by mass = (mass of element / mass of compound) x 100

Question 19

Three ways to find empirical formula from mass data

Answer 19

masses of elements, % composition, combustion data