Unit 3.2 and 3.3 Ionic and Covalent

Question 1

Ionic Bonds are made from ___________

Answer 1

Ions!

Question 2

What type of elements create Ionic Bonds?

Answer 2

A metal and a nonmetal:

ex: sodium + chloride

Question 3

what kinds of ions are formed by metals?

Answer 3

positive ions

Question 4

what kind of ions are formed by nonmetals

Answer 4

negative ions

Question 5

What side of periodic table loses electrons?

Answer 5

left side (1+)

Question 6

What side gains electrons?

Answer 6

Nonmetals (1-)

Question 7

What are the 7 diatomic elenents?

Answer 7

Hydrogen, Nitrogen, Oxygen, Fluorine, Chlorine, Bromine, and Iodine

Question 8

Are ionic bonds stronger or weaker than covalent?

Answer 8

Ionic bonds are stronger because they transfer electrons instead of sharing them

Question 9

What are the properties of ionic compounds

Answer 9

• Melting point is high, takes long
• Solubility- they dissolve EASILY
• Conductivity: solid compound can’t but the dissolved solution does

• Brittleness: High bc of crystal lattice, ions of same charge repel

Question 10

What are properties of covalent bonds?

Answer 10

• Low melting points, bc of weak bond
• Solutiblity: some but not all dissolve
• Conductivity: most dont conduct electricity

Question 11

why don’t covalent bonds create a charged particle

Answer 11

The Atoms SHARE valence electrons so they need more energy which causes a weaker bond

Question 12

What would be the oxidation number of sodium+ iodine?

Answer 12

Ionic, sodium would become positive (1+) and chlorine would gain one electron (1-)

Question 13

How many atoms and elements are in C^2O^4

Answer 13

atoms: 6
elements: 2

Question 14

How many atoms are in C^3H^4Al^2

Answer 14

9 atoms!

Question 15

How are crystal lattices arranged?

Answer 15

they are alternating protons and electrons

Question 16

What happens when an ion is 3+

Answer 16

that atom loses 3 electrons

Question 17

What happens when an ion is 6-

Answer 17

that atom gains 6 electrons

Question 18

True or False: ionic compounds are likely to have a crystalline structure at room temperature

Answer 18

True

Question 19

True or false: substances that are gases at room temperature are always ionic

Answer 19

false

Question 20

True or false: ionic compounds are made of nonmetals bonded to nonmetals

Answer 20

false

Question 21

True or false: Jane left a candle in her car on the warm day. she later noticed that the candle him melted and the wax was all over the seat. James candle is mostly made of covalent bonds

Answer 21

True

Question 22

self and acids are used in a car battery. sultan acids must contain ionic bond since they are great conductors

Answer 22

True

Question 23

ionic bonds are held together do to the attraction of the oppositely charged ions

Answer 23

True

Question 24

The force of attraction between bonds in molecules is much stronger than the bonds between oppositely charged ions in a crystal lattice. True or false:

Answer 24

false

Question 25

True or false: PO is a molecule

Answer 25

True

Question 26

True or false: the chemical formula for tryptophan is CHNO. this is a covalent bond

Answer 26

True

Question 27

A covalent bond is made up of_____________

Answer 27

Molecules

Question 28

what happens if sodium is 1+ and chlorine is 1-. what does this mean

Answer 28

this atom is a NEUTRAL atom

Question 29

are halogens in group 17 reactive

Answer 29

they are very reactive nonmetals

Question 30

is group 18 reactive

Answer 30

no, noble gases arent reactive because the already have 8 valence electrons

Question 31

what is the chemical name of C^2N^4

Answer 31

Carbon tetranitrogen