1st Periodical

Question 1

PbS

Answer 1

Lead (II) Sulfide

Question 2

Balance the charge: Ca+2 (CO3)-2

Answer 2

Ca2(CO3)2

Question 3

True or False:
Arsenic is a metal with a negative two charge.

Answer 3

True

Question 4

Cation is a _________.

Answer 4

Positive Ion

Question 5

These are like main group of metals in many ways.

Answer 5

Transition Metals

Question 6

Ionic or Covalent:
Magnesium Phosphide

Answer 6

Ionic

Question 7

ClO3−

Answer 7

Chlorate

Question 8

Determine the molecular mass of the compound Zn₃N₂.

Answer 8

224 amu

Question 9

Sulfur Trioxide

Answer 9

SO₃

Question 10

Prefix -nona means?

Answer 10

9

Question 11

Negative charge ions are called _________.

Answer 11

Anion

Question 12

Ionic or Covalent:
Calcium Bromide

Answer 12

Ionic

Question 13

It is the amount of each element
present in a compound expressed in percent.

Answer 13

Percent Composition

Question 14

Aluminum Oxide

Answer 14

Al₂O₃

Question 15

True or False:
If you have “ao” or “oo”, don’t turn it into “o.”

Answer 15

False

Question 16

Determine the percent composition of the elements present in the compound V3P5.

Answer 16

V% = 49.62%
P% = 50.37%

Question 17

It is a compound that resulted from two nonmetals reacting with each other.

Answer 17

Covalent Compound

Question 18

NI3

Answer 18

Nitrogen Triiodide

Question 19

Si2Br6

Answer 19

Disilicon Hexabromide

Question 20

KCN

Answer 20

Potassium Cyanide

Question 21

Strontium Sulfide

Answer 21

SrS

Question 22

K₂CO₃

Answer 22

Potassium Carbonate

Question 23

True or False:
Phosphorus is a metal with a negative two charge.

Answer 23

False

Question 24

Dibromine Pentoxide

Answer 24

Br₂O₅

Question 25

Prefix -penta means?

Answer 25

5

Question 26

Ionic or Covalent: Carbon Disulfide

Answer 26

Covalent

Question 27

Other term for Covalent.

Answer 27

Molecular

Question 28

"Stoicheion" means?

Answer 28

Element

Question 29

Tin (IV) Fluoride

Answer 29

SnF₄

Question 30

True or False: The quantities in stoichiometry problems are expressed in atoms, grams, or moles.

Answer 30

True

Question 31

NH₄MnO₄

Answer 31

Ammonium Permanganate

Question 32

What is the prefix for 4?

Answer 32

Tetra

Question 33

Determine the molecular weight of the compound Li₂O.

Answer 33

29.8 amu

Question 34

Ammonium

Answer 34

NH₄⁺

Question 35

Tetraphosporus Hexoxide

Answer 35

P₄O₆

Question 36

TiSe

Answer 36

Titanium (II) Selenide

Question 37

Nickel (IV) Bromide

Answer 37

NiBr4

Question 38

Dinitrogen Monoxide

Answer 38

N₂O

Question 39

This indicates how many atoms are present in every element present in a covalent compound.

Answer 39

Prefix

Question 40

Determine the percent composition of the elements present in the compound K₂O.

Answer 40

K% =82.98% O% = 17.02%

Question 41

In finding the compound name of an anion, what suffix should be replaced on the end of the element's name?

Answer 41

-ide

Question 42

Metal+Nonmetal= _______

Answer 42

Ionic Compound

Question 43

It is a compound of a cation and anion held together by a bond.

Answer 43

Ionic Compound