Ch.7 - Quantum MechanicsWorksheetSee 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

Both energy & matter have different properties, including the way they travel and interact with their surroundings. 

Refraction vs. Diffraction

Concept #1: Understanding Refraction

In refraction, a particle changes direction as it moves from one medium to another. Energy (light) and matter refract differently. 

Concept #2: Understanding Diffraction

In diffraction, a particle bends around an object it encounters. Energy (light) and matter will experience this phenomenon differently. 

Constructive Interference & Destructive Interference

Concept #3: Understanding the difference between Constructive and Destructive Interference

In constructive interference, waves that are in phase will combine together and increase the amplitude. In destructive interference, waves are out of phase and cancel one another out. 

Additional Problems
Determine whether an interference pattern is observed on the other side of the slits in each of the following experiments.An electron beam is aimed at two closely spaced slits. The beam produces only one electron per minute.
Under which conditions is constructive interference observed at a point on the target screen in a two slit experiment with waves? a. When waves from each slit arrive in-phase.b. When waves from each slit arrive 90° out of phase.c. When waves from each slit do not arrive at the point.d. When waves from each slit arrive at different times.e. Constructive interference is never observed.
Which of the following is true about matter and energy?A. Matter and energy can not be interchangedB. Matter and energy can be interchanged, but not destroyedC. Matter and energy can be interchanged, and destroyedD. Matter and energy can be created
When a wave encounters an obstacle or a slit that is comparable in size to its wavelength, it bends around it. This characteristic is called ________.A. Destructive interferenceB. DiffractionC. Photoelectric effectD. Uncertainty principleE. Amplitude
How does electron diffraction demonstrate the complementarity of the wave nature and particle nature of the electron?
Which statement related to particle and wave properties of matter is correct?a. Particles exhibit diffraction while waves do not.b. A wave travels straight through a slit.c. Interference patterns are observed when a wave passes through a barrier with two slits.d. Particles interfere constructively and destructively whereas waves do not.