packet 1

Question 1

What results when two nuclei have a simultaneous attraction?

Answer 1

A chemical bond.

Question 2

What happens when element X (Group 2) and element Y (Group 17) form a compound?

Answer 2

X loses electrons to Y to form an ionic bond.

Question 3

What creates the forces between atoms that form chemical bonds?

Answer 3

Interactions between electrons.

Question 4

What type of bond is formed when electrons are transferred from one atom to another?

Answer 4

Ionic bond.

Question 5

What type of bonds are present in silicon carbide (SiC)?

Answer 5

Covalent bonds.

Question 6

What type of bond is present in the hydrogen gas produced from magnesium ribbon and hydrochloric acid?

Answer 6

Nonpolar covalent bond.

Question 7

What bond results when one or more valence electrons are transferred from one atom to another?

Answer 7

An ionic bond.

Question 8

Which elements form an ionic compound?

Answer 8

Strontium and chlorine.

Question 9

Which element forms an ionic bond with fluorine?

Answer 9

Potassium.

Question 10

Compounds with the greatest ionic character would form when fluorine reacts with?

Answer 10

Alkali metals.

Question 11

Which compound contains both ionic and covalent bonds?

Answer 11

Sodium nitrate.

Question 12

Which element forms an ionic compound when it reacts with lithium?

Answer 12

Bromine.

Question 13

Which formula represents an ionic compound?

Answer 13

NaCl.

Question 14

Which atoms will bond when valence electrons are transferred from one atom to the other?

Answer 14

O and Sr.

Question 15

An ionic bond forms between atoms of?

Answer 15

K and Cl.

Question 16

Which pair of atoms would form the most stable compound?

Answer 16

Li and F.

Question 17

What is the chemical formula for a compound that contains both ionic and covalent bonds in the Solvay process?

Answer 17

NaHCO3 or NH4Cl.

Question 18

What is formed when two atoms of bromine bond together?

Answer 18

A diatomic molecule.

Question 19

Which is an example of a network solid?

Answer 19

SiC(s).

Question 20

When hydrogen and chlorine combine to form hydrogen chloride, a bond is?

Answer 20

Formed as energy is released.

Question 21

How many electrons are shared in a triple bond between two atoms?

Answer 21

6.

Question 22

Which formula represents a network solid?

Answer 22

SiO2.

Question 23

Which formula represents a molecular compound?

Answer 23

N2O4.

Question 24

A diamond consists of covalently bonded carbon atoms. What type of solid is it?

Answer 24

A network solid.

Question 25

Which pair of atoms is held together by a covalent bond?

Answer 25

HCl.

Question 26

Which compound is a network solid at STP?

Answer 26

SiC.

Question 27

Metallic bonding occurs between atoms of?

Answer 27

Copper.

Question 28

Which substance contains particles held together by metallic bonds?

Answer 28

Ni(s).

Question 29

Which substance contains metallic bonds?

Answer 29

Hg(`).

Question 30

At STP, which substance has metallic bonding?

Answer 30

Silver.

Question 31

Which element consists of positive ions immersed in a sea of mobile electrons?

Answer 31

Calcium.

Question 32

Which element has a crystalline lattice composed of positive ions through which electrons flow freely?

Answer 32

Calcium.

Question 33

Which element has metallic bonds at room temperature?

Answer 33

Cesium.

Question 34

Which substance contains positive ions immersed in a sea of mobile electrons?

Answer 34

Cu(s).

Question 35

Metallic bonding occurs between metal atoms that have?

Answer 35

Vacant valence orbitals and low ionization energies.

Question 36

Which substance contains nonpolar covalent bonds?

Answer 36

H2.

Question 37

Which molecule contains a nonpolar covalent bond?

Answer 37

F2.

Question 38

Which of these formulas contains the most polar bond?

Answer 38

HñF.

Question 39

Which substance is correctly paired with its type of bonding?

Answer 39

NH3ópolar covalent.

Question 40

Which electron dot formula represents a molecule that contains a nonpolar covalent bond?

Answer 40

x x Br. x .. .. Br:

Question 41

Which pair of atoms has the most polar bond?

Answer 41

H-Br.

Question 42

Which chemical bond is most polar?

Answer 42

A OñH bond in H2O.

Question 43

The chemical bond between which two atoms is most polar?

Answer 43

SiñO.

Question 44

Which test conclusion indicates that a compound is ionic?

Answer 44

The solid is a poor conductor, and the liquid is a good conductor.

Question 45

Two different samples decompose when heated. Only one is soluble in water. What does this indicate?

Answer 45

Two different compounds.

Question 46

What do the results of tests on two homogeneous white crystalline solids suggest if one contains only ionic bonds and the other only covalent bonds?

Answer 46

Solid A contains only covalent bonds and solid B contains only ionic bonds.

Question 47

Which characteristic is a property of molecular substances?

Answer 47

Low melting point.

Question 48

As sodium hydroxide dissolves in water, what happens to the conductivity of the solution?

Answer 48

Increases.

Question 49

What is the number of electrons shared between the carbon atoms in one molecule of diethyl ether?

Answer 49

4.

Question 50

At STP, how can two solid samples of different ionic compounds with the same density be differentiated?

Answer 50

By their solubility in water.

Question 51

Which of the following substances is the best conductor of electricity?

Answer 51

Cu(s).

Question 52

What type of solid conducts electricity when dissolved in water but not in the solid phase?

Answer 52

An ionic solid.