chemical bonding

Question 1

when an atom loses an electron, what does it become?

Answer 1

positive ion

Question 2

when an atom gains an electron, what does it become?

Answer 2

negative ion

Question 3

greatest number of valence electrons an atom can have

Answer 3

8

Question 4

a mixture of 2+ elements (one metal and one with the properties of metal)

Answer 4

alloy

Question 5

a chemical bond formed when 2 atoms share electrons

Answer 5

covalent bond

Question 6

steel is an alloy of 1 or more elements combined with

Answer 6

iron

Question 7

electrons involved in bonding between atoms are

Answer 7

valence electrons

Question 8

ions made of more than one atom

Answer 8

polyatomic ions

Question 9

why don’t water and oil mix?

Answer 9

water is polar, oil is nonpolar

Question 10

what are the families in the periodic table’s characteristics based on

Answer 10

number of valence electrons

Question 11

why dont molecular compounds electricity

Answer 11

they dont break up into ions

Question 12

metals can be pulled into a thin strand or wire

Answer 12

ductile

Question 13

ionic bond

Answer 13

attraction between metals and nonmetals or opposite chargged ions

Question 14

metallic bond

Answer 14

the attraction between a positive metal ion and the electrons surrounding it

Question 15

compounds are electrically

Answer 15

neutral

Question 16

in what form do ionic compounds conduct electricity

Answer 16

dissolved in water

Question 17

what item is written first in the chemical formula for ionic compounds

Answer 17

metals or positive ions

Question 18

properties of ionic compounds

Answer 18

conduct electricity in water, high melting and boiling point, and are hard, brittle crystals

Question 19

metals can be rolled into thin sheets or beaten into complex shapes

Answer 19

malleable

Question 20

characteristics of molecular compounds

Answer 20

low melting and boiling points, dont conduct electricity

Question 21

how many electrons do halogens normally gain

Answer 21

1

Question 22

in an ionic compound, the total number of positive charges and the total number of negative charges

Answer 22

must be equal

Question 23

most reactive nonmetals

Answer 23

halogens (17)

Question 24

atoms are arranged from left to right, top to bottom based on increasing

Answer 24

atomic number

Question 25

bonds between 2 nonmetals

Answer 25

covalent

Question 26

chemical bonds form when

Answer 26

valence electrons are shared or transferred

Question 27

how are alloys made

Answer 27

mixing metals in carefully measured amounts

Question 28

group 18 elements usually have how many valence electrons

Answer 28

8

Question 29

elements in g1 lose 1 electron to form ions with what charge

Answer 29

+1

Question 30

a neutral atom never has more than how many valence electrons

Answer 30

8

Question 31

what bonds require you to write a prefix with the chemical formula

Answer 31

covalent