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Questions and Answers
What happens to the solubility of gases when temperature decreases?
What happens to the solubility of gases when temperature decreases?
- It becomes zero
- It increases (correct)
- It decreases
- It remains the same
What is the effect of increasing pressure on the solubility of gases?
What is the effect of increasing pressure on the solubility of gases?
- It increases (correct)
- It becomes infinite
- It decreases
- It remains the same
What type of solvent dissolves ionic substances?
What type of solvent dissolves ionic substances?
- Non-polar
- Polar (correct)
- Ionic
- None of the above
What is the principle behind solubility of gases and solvents?
What is the principle behind solubility of gases and solvents?
What type of substances are usually dissolved by polar solvents?
What type of substances are usually dissolved by polar solvents?
What is the primary characteristic of the chemical combinations illustrated in the given options?
What is the primary characteristic of the chemical combinations illustrated in the given options?
Which of the following best represents the type of chemical bonding in the given options?
Which of the following best represents the type of chemical bonding in the given options?
What is the common feature among the options CC₁₄ and CF₄, O₂ and O₃, H₂O and H₂S, and FeO and Fe₂O₃?
What is the common feature among the options CC₁₄ and CF₄, O₂ and O₃, H₂O and H₂S, and FeO and Fe₂O₃?
Which of the following statements is true about the compounds listed?
Which of the following statements is true about the compounds listed?
What do the options illustrate about the elements involved?
What do the options illustrate about the elements involved?
How many elements are classified as actinides?
How many elements are classified as actinides?
What is the range of atomic numbers of actinides?
What is the range of atomic numbers of actinides?
What is a characteristic property of actinides?
What is a characteristic property of actinides?
What is true about the physical properties of actinides?
What is true about the physical properties of actinides?
What can be said about the chemical properties of actinides?
What can be said about the chemical properties of actinides?
What is the kinetic energy of a particle depend on?
What is the kinetic energy of a particle depend on?
Which of the following is a characteristic of collisions between gas particles?
Which of the following is a characteristic of collisions between gas particles?
Why do gas particles have different speeds at a given temperature?
Why do gas particles have different speeds at a given temperature?
What is a characteristic of the motion of gas particles?
What is a characteristic of the motion of gas particles?
What is true about the interaction between gas particles?
What is true about the interaction between gas particles?
What can be inferred about the kinetic energy of CH₄(g) molecules compared to O₂(g) molecules?
What can be inferred about the kinetic energy of CH₄(g) molecules compared to O₂(g) molecules?
Which of the following is a consequence of the difference in kinetic energy between CH₄(g) and O₂(g) molecules?
Which of the following is a consequence of the difference in kinetic energy between CH₄(g) and O₂(g) molecules?
What is the relationship between the kinetic energy and speed of a molecule?
What is the relationship between the kinetic energy and speed of a molecule?
Which of the following is true about the speed of CH₄(g) molecules compared to O₂(g) molecules?
Which of the following is true about the speed of CH₄(g) molecules compared to O₂(g) molecules?
What can be inferred about the molecular mass of CH₄(g) and O₂(g) molecules?
What can be inferred about the molecular mass of CH₄(g) and O₂(g) molecules?
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Study Notes
Actinides
- Actinides are a group of 14 elements with atomic numbers ranging from 90 to 103.
- They exhibit similar chemical and physical properties.
Chemical Bonding
- The capability of two elements to combine in different ratios can be illustrated by FeO and Fe₂O₃.
Solubility of Gases
- Solubility of gases increases as temperature decreases or as pressure increases.
- Like dissolves like, meaning polar solvents dissolve polar or ionic substances.
Kinetic Molecular Theory of Gases
- Gas particles have different speeds at a given temperature due to collisions.
- Gas particles move in a random way due to collisions.
- Collisions between gas particles are elastic, resulting in no loss or gain of energy.
- Gases consist of discrete particles, including atoms (noble gases) and molecules (H2, O2, N2, and Cl2).
- There is no attraction or repulsion between gas particles.
Gas Properties
- The average kinetic energy of CH₄ (g) molecules is less than that of O₂ (g) molecules.
- The average speed of CH₄ (g) molecules is less than that of O₂ (g) molecules, due to their smaller mass.
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