Lecture 3 Flashcards Preview

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Flashcards in Lecture 3 Deck (28):
1

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

molecule

2

what are the elements that naturally occur in diatomic form?

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

3

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

that they are bound together into a single unit

4

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

atomic number and mass

5

what are the electrons in the outermost shell called

valence electrons

6

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

valence electrons

7

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

covalent and ionic

8

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

ionic bonding

9

atoms with the same _____________ share electrons and create covalent bonds

electronegativity

10

what does ionic bonding generate

two oppositely charged ions

11

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

loses;cation(positive)

12

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

gains; anion(negative)

13

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

ionic charge

14

the charge on an ion is given as what

a superscript to the right of the atomic symbol

15

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

zero

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

+1; +3; negative

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)

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

18

what is the sharing of electrons between atoms

covalent bonding

19

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

covalent bonding

20

if the starts with hydrogen then it is

acid

21

if it starts with a metal then it is

ionic

22

if it starts with a nonmetal then it is

covalent

23

the prefixes "mono" and "di" indicate what

covalent

24

molecular compounds contain two or more ______

non metals

25

compounds that consist only of carbon with hydrogen are called what

hydrocarbons

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

chemical formula

27

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

molecular formula

28

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

empirical formula