Chemical Bonds only SL Chemistry | Baamboozle - Baamboozle

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Which of the following molecules has a dipole moment?

NF3

SiH4

F2

BCl3

Which compound contains both ionic and covalent bonds?

H2CO

Na2O

SiH4

NaNO3

In which case is the bond polarity incorrect?

δ+Mg–Hδ–

δ+H–Fδ–

δ+K–Oδ–

δ+ I-Cl δ–

What is the chemical formula for calcium oxide?

CaO

Charlie claims that a single sodium ion and a single oxygen ion do not bond together to form a stable binary ionic compound. Is he correct? You must explain completely

Charlie is correct. The sum of the charges of the two ions must be zero in order for them to form a stable ionic compound.

Calcium (Ca) is in the second column of the periodic table and is classified as an alkaline earth metal. Which of the following formulas shows the ratio of a compound formed from calcium and iodine(I)?

CaI2

Which of the molecules obeys the octet rule?

BH3

PCl5

O3

NO2

How many covalent bonds does graphite have?

3

Which intermolecular force does NOT exist when KF is dissolved in NH3?

ion-induced dipole

hydrogen bond

dipole-dipole

ion-dipole

Which molecule is most polar?

CClF 3

CHF 3

CCl 4

CF 4

Which of the following best describes the changes that Which of the following best describes the changes that occur in the forces of attraction between CO2 molecules as they change phase from a gas to a solid?

London (dispersion) forces operate to form the solid

CO2 molecules crystallize around a nucleation point

Ionic bonds between CO2 molecules are formed

C-O bonds are formed

Name all the intermolecular forces in HCl

dipole-dipole and LDF only

What is the electron and molecular geometry for carbon dioxide. From this data, is it polar?

Electron: linear. Molecular: linear. - It is symmetric therefor NOT POLAR

Covalent bonds take place between

two nonmetals

A chemical formula includes the symbols of the elements in the compound and subscripts that indicate

the number of atoms or ions of each type

In the formation of the compound of sodium chloride

a sodium atom donates an electron to a chlorine atom

Which pairs of words correctly completes the statement? Ionic compounds form when____ and _____ react.

metals ; nonmetals

Which of the following molecules contains a double bond?

water

ammonia

carbon dioxide

hydrogen fluoride

How many resonance structures are there of ozone?

3

1

2

4

Which series shows the correct order of metallic bond strength from strongest to weakest?

Mg > Rb > K > Na

Na > K > Rb > Mg

Mg > Na > K > Rb

Rb > K > Na > Mg

What is the metallic ion in the compound CuCl2?

Cu2+

In which pair do both compounds exhibit predominantly ionic bonding?

SCl4 and HF

BaF and H2O

Na2SO3 and NH3

RbCl and MgS

What is the name of the compound Ni(NO3)2

Nickel (II) nitrate

What is the sum of the charges in a compound?

0

Which rule must be fulfilled by sharing or transferring electrons to create bonds in order for an element to be stable?

octet rule

Atoms with greatly different electronegativity values are expected to form

ionic bonds

no bonds

triple bonds

double bonds

What would be the best use of graphite?

used in drill heads

decorative stone for rings

electrode

lubricant because it is soft and slippery with weak forces

Which of the following is the definition of an allotrope?

The same chemical formula but a different structure

Different numbers of neutrons but same protons

2 or more different physical forms in which an element exist

Different states of a compound

What is the electron geometry, molecular geometry and bond angles in PF3. Is it polar?

electron = tetrahedral; molecular = trigonal pyramidal. angles - <109.5; polar

Why do ionic solids NOT conduct electricity?

This is due to the fact that ions are not free to move in a solid as they are arranged in an ionic lattice.

Covalent compounds are formed when atoms

share valence electrons

What is the chemical formula for diamond?

C(s)

Which combination describes the sulfate(IV) ion, SO32– (also known as sulfite ion)?

A

D

C

B

How many resonance structures are there for sulphite ion? How many lone pairs?

1 lone pair and 3 resonance structures.

Best explanation here that graphite is softer than diamond

graphite is in a tetrahedral arrangement

every carbon atom has a strong bond to the other

the carbons have 4 bonds

layers can slide/move

What is the overall charge of the compound sodium chloride?

0

What is the chemical formula for the compound barium bromide?

BaBr2

What is the arrangement of the bonds in diamond as shown in this structure?

tetrahedral - (4 bonds each 109.5 degrees apart)

What is the electron geometry, molecular geometry and bond angles in BF3. Is it polar?

electron = trigonal planar; molecular = trigonal planar. angles - 120; non-polar

Which statements regarding alloys are correct?

II and III only

III only

I and II only

I, II and III

Why do MOLTEN ionic solids conduct electricity?

When an ionic substance is molten the ionic lattice is broken down allowing the ions to move freely and so conduction occurs.

Why is CHCl3 more polar than CCl4?

CCl4 is symmetric and therefore no net dipole; CHCl3 is asymmetric

Give at least 2 (two) ways to refer to this adorable looking allotrope of carbon

any 2: Bucky ball OR C-60 OR fullterene OR buckminsterfullerene

What is the formula for the compound sulfur hexachloride?

SCl6

What is the formula for the compound formed when a potassium ion(K+) and a sulfide ion (S-2) unite?

K2S

In the cyanide ion (CN–), the nitrogen has a formal charge of

0

-2

-1

+2

What is the electron and moelcular geometry of sulfate ion? Is it polar?

It is tetrahedral for both electron and molecular geometry. Since it is an anion it is polar

What will the result be when a reaction between bismuth and fluorine takes place?

BiF3

What is the suffix for all binary ionic compounds of representative elements?

-ide

Which of the following does NOT hydrogen bond?

CH3NH2

CH3OH

CH3F

HF

Which of the following would you expect to have the highest melting point?

hydrogen chloride

phosphorous trichloride

dinitrogen oxide

magnesium fluoride

In the gaseous phase, which of the following diatomic molecules would be the most polar?

LiF

CsCl

NaCl

CsF

What is the charge on group 1 metals?

1+

Unknown element W has 2 valence electrons. Unknown element X has 7 valence electrons. Which formula shows the most likely outcome when elements W and X react?

WX2

What is the molecular geometry of the carbonate ion? What would be the angles?

trigonal planar; 120 degrees

The Lewis (electron dot) structure of the ethanedioate ion is shown. Outline why all the C–O bond lengths in the ethanedioate ion are the same length

electrons delocalized «across the O–C–O system» or RESONANCE

Which compound has the shortest C–N bond?

CH3CHNH

(CH3)3CNH2

CH3CN

CH3NH2

What is the electron and moelcular geometry of chlorate ion? Is it polar?

Electron: tetrahedral. Molecular : Trigonal pyramidal. : It is polar because it is both asymmetric and it is an anion. (draw please w lone pair on chlorinei

What is the name of the compound SrSO4

strontium sulfate

Which of the following would you expect to have th ehigest melting point?

chlorine

iodine

fluorine

bromine

What is the formula for the compound formed when aluminum ions(Al 3+) and chloride ions (Cl -) unite?

AlCl3

What do sodium ions have in common with chloride ions?

they are both anions

they are both cations

they both form covalent bonds

they both have the same sized charge

What is the formula for the compound formed by magnesium cation (Mg+2) and a fluoride anion (F-)

MgF2