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Questions and Answers
For a liquid with strong intermolecular forces, which property is expected to be low?
For a liquid with strong intermolecular forces, which property is expected to be low?
- Boiling point
- Surface tension
- Viscosity
- Vapor pressure (correct)
Which of the following properties is generally high in a liquid with significant intermolecular attractions?
Which of the following properties is generally high in a liquid with significant intermolecular attractions?
- Vapor Pressure
- Volatility
- Boiling point (correct)
- Evaporation rate
What effect does increased molecular attraction have on a liquid's resistance to flow?
What effect does increased molecular attraction have on a liquid's resistance to flow?
- Decreases the resistance to flow
- Has no effect on flow
- Causes it to change phase
- Increases the resistance to flow (correct)
Which of the following best describes the particle arrangement and motion in liquids?
Which of the following best describes the particle arrangement and motion in liquids?
A liquid with strong intermolecular forces is most likely to exhibit which characteristic regarding surface tension?
A liquid with strong intermolecular forces is most likely to exhibit which characteristic regarding surface tension?
Compared to liquids, gases generally have:
Compared to liquids, gases generally have:
What is the term for the angle formed by the central atom and two attached atoms in a molecule?
What is the term for the angle formed by the central atom and two attached atoms in a molecule?
Which of the following properties is characteristic of solids?
Which of the following properties is characteristic of solids?
In a water molecule, which atom carries a slightly negative charge?
In a water molecule, which atom carries a slightly negative charge?
Sodium carbonate (Na2CO3) is also referred to as:
Sodium carbonate (Na2CO3) is also referred to as:
What is the net dipole in a water molecule?
What is the net dipole in a water molecule?
What is a key application of soda ash mentioned in the text?
What is a key application of soda ash mentioned in the text?
Approximately what is the bond angle in a water molecule?
Approximately what is the bond angle in a water molecule?
Which of the following describes a process that occurs with the soda ash hydrates mentioned in the text?
Which of the following describes a process that occurs with the soda ash hydrates mentioned in the text?
What term is used to describe the type of glass manufactured using sodium carbonate?
What term is used to describe the type of glass manufactured using sodium carbonate?
What happens with sodium carbonate when exposed to air?
What happens with sodium carbonate when exposed to air?
Which of the following best describes the relationship between the density of liquids and gases?
Which of the following best describes the relationship between the density of liquids and gases?
What is the traditional term for calcium carbonate when used in glass manufacturing?
What is the traditional term for calcium carbonate when used in glass manufacturing?
Which of these is a typical use for sodium carbonate?
Which of these is a typical use for sodium carbonate?
What happens when sodium carbonate reacts with certain metals?
What happens when sodium carbonate reacts with certain metals?
What is the general effect of adding sodium carbonate to swimming pools?
What is the general effect of adding sodium carbonate to swimming pools?
What is the primary reason why liquids are generally considered incompressible?
What is the primary reason why liquids are generally considered incompressible?
Which property of liquids is described by the ability of a substance like food coloring to spread evenly through water?
Which property of liquids is described by the ability of a substance like food coloring to spread evenly through water?
How are spills of acids and bases neutralized according to the provided content?
How are spills of acids and bases neutralized according to the provided content?
According to Republic Act 8293, who must approve the use of government works for profit?
According to Republic Act 8293, who must approve the use of government works for profit?
What condition might a government agency impose when allowing the use of its work for profit?
What condition might a government agency impose when allowing the use of its work for profit?
Who is responsible for ensuring that borrowed materials included in this module are properly credited?
Who is responsible for ensuring that borrowed materials included in this module are properly credited?
What is the primary purpose of this module?
What is the primary purpose of this module?
Who is the language editor for this module?
Who is the language editor for this module?
Who are the content editors for this module?
Who are the content editors for this module?
Which of the following is the school division superintendent mentioned for this module?
Which of the following is the school division superintendent mentioned for this module?
Which of the following is not part of the development team of the module?
Which of the following is not part of the development team of the module?
Why do substances with larger molecules typically require more energy to melt or vaporize?
Why do substances with larger molecules typically require more energy to melt or vaporize?
What is the term for the process where an electric current decomposes water into hydrogen and oxygen gases?
What is the term for the process where an electric current decomposes water into hydrogen and oxygen gases?
What volume ratio of hydrogen to oxygen is produced during the electrolysis of water?
What volume ratio of hydrogen to oxygen is produced during the electrolysis of water?
Which type of reaction involves an active metal reacting with water to produce a metal hydroxide and hydrogen gas?
Which type of reaction involves an active metal reacting with water to produce a metal hydroxide and hydrogen gas?
What is a metal oxide referred to when it reacts with water to form a basic solution?
What is a metal oxide referred to when it reacts with water to form a basic solution?
What substance is formed when a nonmetal oxide reacts with water?
What substance is formed when a nonmetal oxide reacts with water?
Under what conditions does the formation of water from hydrogen and oxygen occur explosively?
Under what conditions does the formation of water from hydrogen and oxygen occur explosively?
What volume ratio of hydrogen to oxygen is required for the direct formation of water?
What volume ratio of hydrogen to oxygen is required for the direct formation of water?
Which products are formed when a hydrocarbon undergoes complete combustion?
Which products are formed when a hydrocarbon undergoes complete combustion?
Which of the following is NOT mentioned as a way to produce water in the provided text?
Which of the following is NOT mentioned as a way to produce water in the provided text?
What is the chemical formula of the hydrate compound gypsum, according to the text?
What is the chemical formula of the hydrate compound gypsum, according to the text?
What happens to the water molecules present in a hydrate when it is heated?
What happens to the water molecules present in a hydrate when it is heated?
Which of the following properties is NOT associated with a liquid according to the text?
Which of the following properties is NOT associated with a liquid according to the text?
Which type of intermolecular force is described as the weakest and results from temporary dipoles?
Which type of intermolecular force is described as the weakest and results from temporary dipoles?
The text mentions that ethanol is blended with gasoline to produce gasohol. According to the text, what products are formed when gasohol undergoes combustion?
The text mentions that ethanol is blended with gasoline to produce gasohol. According to the text, what products are formed when gasohol undergoes combustion?
In the given context of liquids, the term used to describe the state which has a variable shape but a fixed volume is:
In the given context of liquids, the term used to describe the state which has a variable shape but a fixed volume is:
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Study Notes
General Chemistry 2, Quarter 3, Week 2 Module 2
- This module covers the effects of intermolecular forces, properties of liquids, and the structure of water.
- The effects of intermolecular forces are discussed as well as properties like surface tension, viscosity, vapor pressure, boiling point, and molar heat.
- The module explores the relationship between intermolecular attraction and the properties of vapor pressure, boiling point, viscosity, and surface tension.
- It also includes prediction of which liquid in a pair has the higher vapor pressure, boiling point, viscosity, and surface tension.
- The module explains properties of water with its molecular structure and intermolecular forces, including unusual physical properties such as bond angle and net dipole.
- The module gives chemical equations for chemical reactions of water as well as several example problems and exercises for practice.
Lesson 1: The Effects of Intermolecular Forces
- Molecules in gases are widely separated.
- Interactions between molecules in liquids and solids are much stronger than in gases.
- Properties of liquids and solids can't be explained by simple relationships; rather, the interactions between molecules are crucial.
Lesson 2: The Properties of Liquids
- Liquids have a variable shape but a fixed volume.
- Liquids flow readily.
- Liquids do not compress or expand significantly.
- Liquids have a high density compared to gases.
- Liquids that are soluble, mix homogeneously.
- Liquids diffuse more slowly than gases.
Lesson 3: The Structure of Water
- Water molecules form intermolecular hydrogen bonds.
- The hydrogen atom in a water molecule is attracted to the nonbonding electrons on the highly electronegative oxygen atom.
- The oxygen atom is slightly negative and each hydrogen atom slightly positive, creating a net dipole.
- The bond angle between the two hydrogen atoms in water is approximately 104.5°.
- Water's unusual properties stem from hydrogen bonding.
- Water has extraordinarily high values for boiling point, viscosity, and surface tension.
- The density of ice is less than that of water due to hydrogen bonding.
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