Quantized Energy and Photons (Section)
A stellar object is emitting radiation at 3.55 mm.
(a) What type of electromagnetic spectrum is this radiation?
(b) If a detector is capturing 3.2 × 108 photons per second at this wavelength, what is the total energy of the photons detected in 1.0 hour?
General Chemistry: Chapter 1 Reading Notes By Madelyne Crawford, August 25 The following notes were acquired from Chemistry: A Molecular Approach Textbook by Nivaldo J Tro. The reading was to be completed by Monday, August 29. Overview/Review of Chapter 1 The main goal of chemistry is to analyze and study the behavior of matter by understanding the behavior of atoms and molecules The scientific approach to knowledge is based on observation and experiments Qualitative vs. quantitative: o Qualitative describes how a process happens o Quantitative measures something about the process A hypothesis is an interpretation of observations that explains scientific findings The difference between a law and a theory is that laws describe what nature does and theories explain why nature behaves in certain ways *Good hypotheses are ALWAYS falsifiable (meaning they can be confirmed or refuted in the future) Antoine Lavoisier- father of the Law of Conservation of Mass, which he used to summarize observations of his combustion experiments o “In a chemical reaction, matter is neither created nor destroyed.” John Dalton- father of the atomic theory o “matter is composed of small, indestructible particles” Scientific theories are some of the strongest pieces of scientific knowledge- they are descriptions of why nature does what it does and have been proven over and over again for centuries