Lecture 3

Question 1

two or more atoms tightly bonded to each other so that they form a single unit

Answer 1

molecule

Question 2

what are the elements that naturally occur in diatomic form?

Answer 2

H2, N2, F2, O2, I2, Cl2. Br2(have no fear of ice cold beer)

Question 3

what do the subscripts to the right of the chemical symbol indicate about the atoms

Answer 3

that they are bound together into a single unit

Question 4

what are sub and superscripts to the left of the chemical symbol

Answer 4

atomic number and mass

Question 5

what are the electrons in the outermost shell called

Answer 5

valence electrons

Question 6

these are the electrons on an atom that can be gained or lost in a chemical reaction

Answer 6

valence electrons

Question 7

what are the two types of chemical bonds that bind molecules together

Answer 7

covalent and ionic

Question 8

in what type of bonding do atoms transfer electrons to eachother(complete transfer, no sharing)

Answer 8

ionic bonding

Question 9

atoms with the same _____________ share electrons and create covalent bonds

Answer 9

electronegativity

Question 10

what does ionic bonding generate

Answer 10

two oppositely charged ions

Question 11

in an ionic bond the metal ______ electrons to become a _______

Answer 11

loses;cation(positive)

Question 12

in an ionic bond the nonmetal _______ electrons to become a _______

Answer 12

gains; anion(negative)

Question 13

what comes when an atom does not have a valence shell with 8 electrons

Answer 13

ionic charge

Question 14

the charge on an ion is given as what

Answer 14

a superscript to the right of the atomic symbol

Question 15

what is the charge on the compound(anion and cation together)

Answer 15

zero

Question 16

from left to right the main groups of the periodic table have ionic charge that start at ____ to ____ the changes to ______ when we go from metals to nonmetals

Answer 16

+1; +3; negative

Question 17

what are the elements within the transition metals that always have a certain ionic charge(do not need roman numerals to indicate the oxidation state)

Answer 17

Silver (+1), Zinc(+2), Aluminum(+3), Cadmium(+2)

Question 18

what is the sharing of electrons between atoms

Answer 18

covalent bonding

Question 19

this type of bonding generally occurs between two atoms of the same element

Answer 19

covalent bonding

Question 20

if the starts with hydrogen then it is

Answer 20

acid

Question 21

if it starts with a metal then it is

Answer 21

ionic

Question 22

if it starts with a nonmetal then it is

Answer 22

covalent

Question 23

the prefixes “mono” and “di” indicate what

Answer 23

covalent

Question 24

molecular compounds contain two or more ______

Answer 24

non metals

Question 25

compounds that consist only of carbon with hydrogen are called what

Answer 25

hydrocarbons

Question 26

what of a substance is a notation that uses atomic symbols with numerical subscripts to convey the relative proportion of atoms of the different elements in the substance

Answer 26

chemical formula

Question 27

this gives the exact number of different atoms of an element in a molecule

Answer 27

molecular formula

Question 28

this lists the relative number of different types of atoms in a molecule

Answer 28

empirical formula