Chapter 2: Question: (page 81)
What is the key difference between an element and a compound?
An element is made up of the same type of atoms while a compound is formed by combining different elements in a fixed ratio.
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When Rutherford's coworkers bombarded gold foil with particles, they obtained results that overturned the existing (Thomson) model of the atom. Explain.
When Rutherford's coworkers bombarded gold foil with particles, they obtained results that overturned the existing (Thomson) model of the atom. Explain.
Even though several elements have only one naturally occurring isotope and atomic nuclei have whole numbers of protons and neutrons, no atomic mass is a whole number. Use the data from Table 2.2 to explain this fact.
Show, with calculations, how the following data illustrate thelaw of multiple proportions:Compound 1: 47.5 mass % sulfur and 52.5 mass % chlorineCompound 2: 31.1 mass % sulfur and 68.9 mass % chlorine
Define atomic number and mass number which can vary without changing the identity of the element?
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