Page 211 - Teacher Preview Copy
P. 211
.
Topic 4: Chemical bonding
25. Identifying Properties of substances: Recalling concept facts
1. A characteristic of ionic solids is that they have 3) High electrical conductivity
1) High melting points
2) Low melting points 4) Low solubility water
2. Which characteristic is a property of molecular substances?
1) Good heat conductivity 3) Low melting point
4) High melting point
2) Good electrical conductivity
3. Which two characteristics are properties of metallic substances?
1) High solubility in water and high electrical conductivity
2) High solubility in water and low electrical conductivity
3) Low solubility in water and high electrical conductivity
4) Low solubility in water and low electrical conductivity
4. Which is true of the conductivity of metallic substances?
Teacher Preview Copy
Compound Teacher Preview Copy
1) Metallic substances conduct electricity as solids and liquids
2) Metallic substances conduct electricity only as liquids
3) Metallic substances conduct electricity due to mobile ions
4) Metallic substances conduct electricity due to mobile protons
5. Which is true of conductivity of ionic substances?
1) Ionic substances can conduct electricity as solids
2) Ionic substances can conduct electricity as liquids only
3) Ionic substances conduct electricity as aqueous and as liquids
4) Ionic substances do not conduct electricity at all
6. Which properties best accounts for the high conductivity of metallic substances?
1) High electronegativity
3) Highly mobile electrons
2) High ionization energy 4) Highly mobile protons
7. Conductivity of ionic substances when dissolved in water is primarily due to the presence of
1) Mobile positive ions, only 3) Mobile positive and negative ions
4) Mobile electrons in valance shell
2) Mobile negative ions, only
8. Which type of substance has low melting point, and is a poor conductor of heat and electricity?
1) Network solids
3) Metallic solids
2) Molecular solids 4) Ionic solids
9. A substance has a melting point of 1074 K and conducts electricity when dissolved in water, but
does NOT conduct electricity in the solid phase. The substance is most likely
3) Metallic solid
1) Network solid
2) Molecular solid 4) Ionic solid
10. Which terms describe a substance that has a low melting point and poor electrical conductivity?
3) Ionic and molecular
1) Covalent and metallic
2) Covalent and molecular 4) ionic and metallic
11.
Melting point Conductivity Solubility in water
A High Excellent (liquid soluble
B High Very poor (solid) Insoluble
C Low Poor (solid) Slightly soluble
D High Excellent (solid) Insoluble
Which list identifies the type of solid each compound represents?
1) A – ionic, B – network , C – metallic, D-molecular
2) A – network, B – ionic, C – molecular, D – metallic
3) A – metallic, B – molecular, C – network, D – ionic
4) A – ionic, B – network, C – molecular, D - metallic
Copyright©2010 E3 Scholastic Publishing. All Rights Reserved. SurvivingChem.com 201
Topic 4: Chemical bonding
25. Identifying Properties of substances: Recalling concept facts
1. A characteristic of ionic solids is that they have 3) High electrical conductivity
1) High melting points
2) Low melting points 4) Low solubility water
2. Which characteristic is a property of molecular substances?
1) Good heat conductivity 3) Low melting point
4) High melting point
2) Good electrical conductivity
3. Which two characteristics are properties of metallic substances?
1) High solubility in water and high electrical conductivity
2) High solubility in water and low electrical conductivity
3) Low solubility in water and high electrical conductivity
4) Low solubility in water and low electrical conductivity
4. Which is true of the conductivity of metallic substances?
Teacher Preview Copy
Compound Teacher Preview Copy
1) Metallic substances conduct electricity as solids and liquids
2) Metallic substances conduct electricity only as liquids
3) Metallic substances conduct electricity due to mobile ions
4) Metallic substances conduct electricity due to mobile protons
5. Which is true of conductivity of ionic substances?
1) Ionic substances can conduct electricity as solids
2) Ionic substances can conduct electricity as liquids only
3) Ionic substances conduct electricity as aqueous and as liquids
4) Ionic substances do not conduct electricity at all
6. Which properties best accounts for the high conductivity of metallic substances?
1) High electronegativity
3) Highly mobile electrons
2) High ionization energy 4) Highly mobile protons
7. Conductivity of ionic substances when dissolved in water is primarily due to the presence of
1) Mobile positive ions, only 3) Mobile positive and negative ions
4) Mobile electrons in valance shell
2) Mobile negative ions, only
8. Which type of substance has low melting point, and is a poor conductor of heat and electricity?
1) Network solids
3) Metallic solids
2) Molecular solids 4) Ionic solids
9. A substance has a melting point of 1074 K and conducts electricity when dissolved in water, but
does NOT conduct electricity in the solid phase. The substance is most likely
3) Metallic solid
1) Network solid
2) Molecular solid 4) Ionic solid
10. Which terms describe a substance that has a low melting point and poor electrical conductivity?
3) Ionic and molecular
1) Covalent and metallic
2) Covalent and molecular 4) ionic and metallic
11.
Melting point Conductivity Solubility in water
A High Excellent (liquid soluble
B High Very poor (solid) Insoluble
C Low Poor (solid) Slightly soluble
D High Excellent (solid) Insoluble
Which list identifies the type of solid each compound represents?
1) A – ionic, B – network , C – metallic, D-molecular
2) A – network, B – ionic, C – molecular, D – metallic
3) A – metallic, B – molecular, C – network, D – ionic
4) A – ionic, B – network, C – molecular, D - metallic
Copyright©2010 E3 Scholastic Publishing. All Rights Reserved. SurvivingChem.com 201
