Chemistry 151: Chapter 3 Mastering Practice Quesions

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Group 7A charge (using the octet rule)

-1 charge

gold(I) has a charge of:

1+

Express your answer as a numerical value with a sign for the charge: lithium

1+ in group 1A

Gold (I) Chloride an antimicrobial

1,1

calcium and carbonate, the mineral limestone

1,1

calcium ion and sulfate ion

1,1

chloride has a charge of:

1-

Express your answer as a numerical value with a sign for the charge: chlorine

1- in group 7A

what is the molar mass of carbohydrate glucose C6H12O6

180.16 g/mol

Calcium is group 2A which means that the cation has a:

2+ charge

calcium cation has a:

2+ charge

Express your answer as a numerical value with a sign for the charge: strontium

2+ in group 2A

polyatomic anion carbonate (CO3)2- has a:

2- charge

Express your answer as a numerical value with a sign for the charge: sulfur

2- in group 6A

The chemical formula when Al combines with CO32-:

Al2(CO3)3

Gold (I) Chloride will result in a chemical formula of:

AuCl

calcium sulfate chemical formula:

CaSO4

H20

Chemical formula for water

When comparing C and Cl, which one is more electronegative?

Chloride

nonpolar

Cl2 F2 Br2 O2 H2 He Ne Ar Xe CH4 C2H6 CH2

what is the ionic compound formed with copper (I) ion and sulfide?

Cu2S

what is the chemical formula for potassium and chloride?

KCl

What is the formula for an ionic compound that contains the elements magnesium and chlorine?

MgCl2

Alluminum Chloride

NH4Cl

what is the formula for the ionic compound ammonium nitrate?

NH4NO3

what is the chemical formula for nitrogen triiodide?

NI3

what is the chemical formula for nitrogen dioxide?

NO2

Sodium Bicarbonate

NaHCO3

Sodium Nitrite

NaNO2

When comparing I and N, which one is more electronegative?

Nitrogen

When comparing P to N, which one is more electronegative?

Nitrogen

When comparing Se and Te, which one is more electronegative?

Selenium

what is the chemical formula for silicon tetrachloride?

SiCl4

what is the name for CO2?

carbon dioxide

what is the name for CO?

carbon monoxide

what is the name of ionic compound formed from copper(I) ion and sulfur?

copper(I) sulfide

what is the name for N2O?

dinitrogen monoxide

potassium and calcium

do not form ionic bonds

sulfur and bromine

do not form ionic bonds

fluorine and sodium

form ionic bonds

iron and chlorine

form ionic bonds

oxygen and magnesium

form ionic bonds

sodium and oxygen

form ionic bonds

nonmetals in groups 5A, 6A, 7A tend to:

gain electrons and form anions

To achieve an ionic compound with a net zero charge:

gold(I) ions form an ionic bond with 1 chloride ion

electronegative tend to:

increase as you move up and to the right of the periodic table and down the periodic table

When metal and nonmetal exchange electrons to make a cation and anion, respectively, they can form:

ionic compound

The formula of an ionic compound indicates the:

kinds and number of ions

The metal lithium is in group 1A and tends to:

lose an electron to form a cation. The cation will have a charge of 1+ because it will have one more proton than the number of electrons.

C

n1=2 n2=4

what is the name for NO2?

nitrogen dioxide

what is the name for NO?

nitrogen monoxide

what group on the periodic table is not considered electronegative?

noble gases

Is CCl4 polar or nonpolar?

nonpolar

Is Cl2 polar or nonpolar?

nonpolar

is CO2 polar or nonpolar?

nonpolar

what is the name for PBr3?

phosphorus tribromide

what is the name for the compound PCl3?

phosphorus trichloride

Is HF polar or nonpolar?

polar

Is SCl2 polar or nonpolar?

polar

is CH3Br polar or nonpolar?

polar

The name of the compound when K combines with CO32-:

potassium carbonate

Cl-

protons = 17, electrons = 18 (add 1 from 17) anion formed

Ca2+

protons = 20, electrons = 18 (subtract 2 from 20) cation formed

Cu+

protons = 29, electrons = 28 (subtract 1 from 29) cation formed

Te2-

protons = 52, electrons = 54 (add 2 from 52) anion formed

what is the name of the ionic compound BaCO3?

barium carbonate

what is the molar mass of KClO2?

106.55 g/mol

what is the molar mass of magnesium sulfate MgSO4:

120.38 g/mol

how many valence electrons does carbon have?

4 valence electrons

what is the molar mass CH3CO2H?

60.5 g/mol

what is the molar mass of sulfur dioxide SO2?

64.07 g/mol

how many valence electrons does chlorine have?

7 valence electrons

what is the molar mass of NH4NO3?

80.05 g/mol

What is the most electronegative element on the periodic table?

Fluorine

What is the least electronegative element?

Francium

The chemical formula when K combines CO32-:

K2CO3

Potassium Phosphate

K3PO4

The chemical formula when Se(II) combines with CO32-:

SnCO3

why are noble gases not considered electronegative?

They have a complete valence shell and are not very reactive.

what is the chemical formula for zinc and oxide?

ZnO

electronegative

a measure of how strongly atoms attract bonding electrons

The name of the compound when Se(II) combines with CO32-:

tin (II) carbonate

The number of anions and cations create a compound with an overall charge of:

zero


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