Ch.1 - Intro to General ChemistryWorksheetSee all chapters
All Chapters
Ch.1 - Intro to General Chemistry
Ch.2 - Atoms & Elements
Ch.3 - Chemical Reactions
BONUS: Lab Techniques and Procedures
BONUS: Mathematical Operations and Functions
Ch.4 - Chemical Quantities & Aqueous Reactions
Ch.5 - Gases
Ch.6 - Thermochemistry
Ch.7 - Quantum Mechanics
Ch.8 - Periodic Properties of the Elements
Ch.9 - Bonding & Molecular Structure
Ch.10 - Molecular Shapes & Valence Bond Theory
Ch.11 - Liquids, Solids & Intermolecular Forces
Ch.12 - Solutions
Ch.13 - Chemical Kinetics
Ch.14 - Chemical Equilibrium
Ch.15 - Acid and Base Equilibrium
Ch.16 - Aqueous Equilibrium
Ch. 17 - Chemical Thermodynamics
Ch.18 - Electrochemistry
Ch.19 - Nuclear Chemistry
Ch.20 - Organic Chemistry
Ch.22 - Chemistry of the Nonmetals
Ch.23 - Transition Metals and Coordination Compounds

Solution: In the process of attempting to characterize a substance, a chemist makes the following observations:(a) The substance is a silvery white, lustrous metal.(b) The substance melts at 649 oC,(c) The subs

Problem

In the process of attempting to characterize a substance, a chemist makes the following observations:
(a) The substance is a silvery white, lustrous metal.
(b) The substance melts at 649 oC,
(c) The substance boils at 1105 oC.
(d) The density of the substance at 20 oC is 1.738 g/cm3.
(e) The substance burns in air, producing an intense white light.
(f) The substance reacts with chlorine to give a brittle white solid.
(g) The substance can be pounded into thin sheets or drawn into wires.
(h) The substance is a good conductor of electricity.

Which of these characteristics are physical properties, and which are chemical properties?

Solution

We're asked to determine which of the given characteristics are physical properties, and which are chemical properties.


Recall that:

  • Physical properties 
    • Can be observed without changing the identity or chemical composition of a substance. 
    • Still present after a physical change or a change in matter as it goes from one physical state to another (phase change)
    • Physical properties include appearance, malleability or ductility and conductivity, and density
  • Chemical properties 
    • Properties that can be observed as a result of a chemical change wherein atoms rearrange themselves to create a new substance. 
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