CHEM 210 FINAL EXAM UPDATED QUESTIONS
AND ANSWERS SURE A+
✔✔What is the normal boiling point? - ✔✔The temperature where vapor pressure
equals 1 atm
✔✔What are the four types of solids? - ✔✔Ionic, molecular, covalent network, and
metallic
✔✔What are the properties of ionic solids? - ✔✔High melting point, brittle, and conduct
electricity when molten
✔✔What are the properties of molecular solids? - ✔✔Low melting point and soft
✔✔What are the properties of covalent network solids? - ✔✔Very strong (e.g., diamond,
SiO2) and high melting point
✔✔What are the properties of metallic solids? - ✔✔Conduct electricity and are
malleable
✔✔What is a solution? - ✔✔A homogeneous mixture
✔✔What is the difference between a solute and a solvent? - ✔✔Solute is the dissolved
substance; solvent is the dissolving medium
✔✔What does 'like dissolves like' mean? - ✔✔Polar dissolves polar, and nonpolar
dissolves nonpolar
✔✔What is a strong electrolyte? - ✔✔A substance that completely dissociates in
solution (e.g., NaCl)
✔✔What is a weak electrolyte? - ✔✔A substance that partially dissociates in solution
(e.g., acids/bases)
, ✔✔What is a nonelectrolyte? - ✔✔A substance that does not form ions in solution (e.g.,
sugar)
✔✔What determines solubility? - ✔✔IMF strength, temperature, and pressure (for
gases)
✔✔How does temperature affect the solubility of solids in liquids? - ✔✔Higher
temperature generally increases solubility
✔✔How does temperature affect the solubility of gases in liquids? - ✔✔Higher
temperature decreases solubility
✔✔What does Henry's Law state? - ✔✔Gas solubility is proportional to pressure
✔✔What are colligative properties? - ✔✔Properties that depend on the number of
particles, not the type
✔✔What are the four colligative properties? - ✔✔Vapor pressure lowering, boiling point
elevation, freezing point depression, and osmotic pressure
✔✔What is the van't Hoff factor (i)? - ✔✔The number of particles formed in solution
✔✔What is a colloid? - ✔✔A mixture with intermediate particle size
✔✔What is the Tyndall effect? - ✔✔The scattering of light in colloids
✔✔What is chemistry? - ✔✔Study of matter, its properties, and changes
✔✔What are the steps of the scientific method? - ✔✔Observation → Hypothesis →
Experiment → Theory/Law
✔✔Define hypothesis, theory, and law. - ✔✔Hypothesis is a testable explanation;
Theory is a well-supported explanation; Law describes a pattern.
✔✔Define macroscopic, microscopic, and symbolic in chemistry. - ✔✔Macroscopic is
observable; Microscopic refers to atoms/molecules; Symbolic refers to
formulas/equations.
✔✔What is the difference between a physical and chemical change? - ✔✔Physical
change involves no new substance; Chemical change results in a new substance
formed.
✔✔What is matter? - ✔✔Anything with mass and volume
AND ANSWERS SURE A+
✔✔What is the normal boiling point? - ✔✔The temperature where vapor pressure
equals 1 atm
✔✔What are the four types of solids? - ✔✔Ionic, molecular, covalent network, and
metallic
✔✔What are the properties of ionic solids? - ✔✔High melting point, brittle, and conduct
electricity when molten
✔✔What are the properties of molecular solids? - ✔✔Low melting point and soft
✔✔What are the properties of covalent network solids? - ✔✔Very strong (e.g., diamond,
SiO2) and high melting point
✔✔What are the properties of metallic solids? - ✔✔Conduct electricity and are
malleable
✔✔What is a solution? - ✔✔A homogeneous mixture
✔✔What is the difference between a solute and a solvent? - ✔✔Solute is the dissolved
substance; solvent is the dissolving medium
✔✔What does 'like dissolves like' mean? - ✔✔Polar dissolves polar, and nonpolar
dissolves nonpolar
✔✔What is a strong electrolyte? - ✔✔A substance that completely dissociates in
solution (e.g., NaCl)
✔✔What is a weak electrolyte? - ✔✔A substance that partially dissociates in solution
(e.g., acids/bases)
, ✔✔What is a nonelectrolyte? - ✔✔A substance that does not form ions in solution (e.g.,
sugar)
✔✔What determines solubility? - ✔✔IMF strength, temperature, and pressure (for
gases)
✔✔How does temperature affect the solubility of solids in liquids? - ✔✔Higher
temperature generally increases solubility
✔✔How does temperature affect the solubility of gases in liquids? - ✔✔Higher
temperature decreases solubility
✔✔What does Henry's Law state? - ✔✔Gas solubility is proportional to pressure
✔✔What are colligative properties? - ✔✔Properties that depend on the number of
particles, not the type
✔✔What are the four colligative properties? - ✔✔Vapor pressure lowering, boiling point
elevation, freezing point depression, and osmotic pressure
✔✔What is the van't Hoff factor (i)? - ✔✔The number of particles formed in solution
✔✔What is a colloid? - ✔✔A mixture with intermediate particle size
✔✔What is the Tyndall effect? - ✔✔The scattering of light in colloids
✔✔What is chemistry? - ✔✔Study of matter, its properties, and changes
✔✔What are the steps of the scientific method? - ✔✔Observation → Hypothesis →
Experiment → Theory/Law
✔✔Define hypothesis, theory, and law. - ✔✔Hypothesis is a testable explanation;
Theory is a well-supported explanation; Law describes a pattern.
✔✔Define macroscopic, microscopic, and symbolic in chemistry. - ✔✔Macroscopic is
observable; Microscopic refers to atoms/molecules; Symbolic refers to
formulas/equations.
✔✔What is the difference between a physical and chemical change? - ✔✔Physical
change involves no new substance; Chemical change results in a new substance
formed.
✔✔What is matter? - ✔✔Anything with mass and volume
