Unit 3 - Chemical Bonding - Richelle Carr | Biblioteka

1

Malleability and ductility are characteristics of substances with

ionic bonds

metallic bonds

covalent bonds

polyatomic ions

1

Which of the following atom's Lewis dot notation shows six valence electrons?

sulfur

magnesium

iodine

nitrogen

1

How many valence electrons to strontium atoms generally lose?

0

2

3

1

6

Match the following electronegativities to their respective atoms.

Stavka koja se može prevući		Odgovarajuća stavka
Aluminum		3.0
Helium		2.2
Lithium		1.5
Arsenic		1.0
Hydrogen		N/A
Nitrogen		2.1

1

The melting points of ionic compounds are higher than the melting points of molecular compounds because

attractive forces between ions are stronger than the attractive forces between molecules

none of the above

Ionic substances are all flammable

ionic compounds are brittle

1

Which of the properties listed below is NOT a property of ionic compounds?

hardness

low melting point

brittle

high melting point

1

The electrons involved in the formation of a chemical bond are called

Lewis electrons

valence electrons

dipoles

s block electrons

1

Which of the pairs of elements below will form the LEAST polar bond?

Li and S

O and F

Na and Cl

Cl and H

1

Metallic Bonds have all the following characteristics, except

good conductor of electricity

high conductor of heat

malleable

low melting point

3

Match the element with its correct Lewis Dot Structure for covalent bonding

Stavka koja se može prevući		Odgovarajuća stavka
Fluorine (F)		4 dots
Carbon (C)		3 dots
Boron (B)		7 dots

3

Match the number of covalent bonds with the appropriate element

Stavka koja se može prevući		Odgovarajuća stavka
2 covalent bonds		Hydrogen (H)
3 covalent bonds		Oxygen (O)
1 covalent bond		Nitrogen (N)

1

What is the defining characteristic of a covalent bond?

Transfer of electrons from one atom to another

The attraction of opposite charges

Caused by the attraction of protons and electrons

Sharing of electron pairs between atoms

1

In a water molecule (H2O), what type of bond is between the Hydrogen and Oxygen atoms?

Van der Waals Bond

Metallic Bond

Covalent Bond

Ionic Bond

1

Which of these compounds does NOT form a covalent bond?

O2

NaCl

H2O

CH4

1

Covalent bonds can only occur between atoms of the same element.

Tačno

Netačno

1

In a covalent bond, the atom with the higher electronegativity completely takes the electrons from the other atom.

Tačno

Netačno

1

If oxygen has an electronegativity of 3.5 and hydrogen has an electronegativity of 2.1, what is the difference in electronegativity?

1

Using the Pauling scale, sodium (Na) has an electronegativity of 0.93, whereas chlorine (Cl) has an electronegativity of 3.16. What is the difference?

1

Carbon (electronegativity - 2.55) forms a covalent compound with hydrogen (electronegativity - 2.1). Calculate the difference in electronegativity.

3

Using the Octet Rule and the electron configuration of each element, select all of the the answers that explain what the elements need to do in order to achieve stability.

the metal will gain two electrons

each non-metal will lose one electron

both elements need to have 8 valence electrons in their outer shell

each non-metal will gain at least one electron

each metal will lose at least one electron

each non-metal will gain two electrons

5

Show the Ionic compound formation equation for Li and Cl.

2

3

Match the following metals to form alloys.

Stavka koja se može prevući		Odgovarajuća stavka
copper		carbon
tin		zinc
iron		copper

1

Why are metals shiny?

electrons immediately emit photons and return to a lower energy level

a plane of atoms can slide past another without breaking bonds

electrons move more quickly

the valence electrons are delocalized, or free to roam about

Unit 3 - Chemical Bonding

Unit 3 - Chemical Bonding

Malleability and ductility are characteristics of substances with

Which of the following atom's Lewis dot notation shows six valence electrons?

How many valence electrons to strontium atoms generally lose?

Match the following electronegativities to their respective atoms.

The melting points of ionic compounds are higher than the melting points of molecular compounds because

Which of the properties listed below is NOT a property of ionic compounds?

The electrons involved in the formation of a chemical bond are called

Which of the pairs of elements below will form the LEAST polar bond?

Metallic Bonds have all the following characteristics, except

Match the element with its correct Lewis Dot Structure for covalent bonding

Match the number of covalent bonds with the appropriate element

What is the defining characteristic of a covalent bond?

In a water molecule (H2O), what type of bond is between the Hydrogen and Oxygen atoms?

Which of these compounds does NOT form a covalent bond?

Covalent bonds can only occur between atoms of the same element.

In a covalent bond, the atom with the higher electronegativity completely takes the electrons from the other atom.

If oxygen has an electronegativity of 3.5 and hydrogen has an electronegativity of 2.1, what is the difference in electronegativity?

Using the Pauling scale, sodium (Na) has an electronegativity of 0.93, whereas chlorine (Cl) has an electronegativity of 3.16. What is the difference?

Carbon (electronegativity - 2.55) forms a covalent compound with hydrogen (electronegativity - 2.1). Calculate the difference in electronegativity.

Using the Octet Rule and the electron configuration of each element, select all of the the answers that explain what the elements need to do in order to achieve stability.

Show the Ionic compound formation equation for Li and Cl.

Match the following metals to form alloys.

Why are metals shiny?

Malleability and ductility are characteristics of substances with

Which of the following atom's Lewis dot notation shows six valence electrons?

How many valence electrons to strontium atoms generally lose?

Match the following electronegativities to their respective atoms.

The melting points of ionic compounds are higher than the melting points of molecular compounds because

Which of the properties listed below is NOT a property of ionic compounds?

The electrons involved in the formation of a chemical bond are called

Which of the pairs of elements below will form the LEAST polar bond?

Based on the table, which of the following statements is true?

Metallic Bonds have all the following characteristics, except

Match the element with its correct Lewis Dot Structure for covalent bonding

Match the number of covalent bonds with the appropriate element

What is the defining characteristic of a covalent bond?

In a water molecule (H2O), what type of bond is between the Hydrogen and Oxygen atoms?

Which of these compounds does NOT form a covalent bond?

Covalent bonds can only occur between atoms of the same element.

In a covalent bond, the atom with the higher electronegativity completely takes the electrons from the other atom.

If oxygen has an electronegativity of 3.5 and hydrogen has an electronegativity of 2.1, what is the difference in electronegativity?

Using the Pauling scale, sodium (Na) has an electronegativity of 0.93, whereas chlorine (Cl) has an electronegativity of 3.16. What is the difference?

Carbon (electronegativity - 2.55) forms a covalent compound with hydrogen (electronegativity - 2.1). Calculate the difference in electronegativity.

Using the Octet Rule and the electron configuration of each element, select all of the the answers that explain what the elements need to do in order to achieve stability.

Show the Ionic compound formation equation for Li and Cl.

Match the following metals to form alloys.

Why are metals shiny?

Based on the table, which of the following statements is true?