Chapter 3- notes

Chapter 3- notes - -Atom consists of a nucleus surrounded...

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Chapter 3- Part 1 Powerpoint Definition of mineral - Naturally occurring - Crystalline solid substance - Inorganic - Specific chemical composition o Ex. Quartz SiO2 Minerals in earth’s crust… - Oxygen, O - Silicon, Si - Aluminum, Al - Iron, Fe - Magnesium, Mg - Calcium, Ca - Sodium, Na - Potassium, K The mineral quartz - Chemical composition- SiO2 Many organisms secret calcite shells such as foraminifera Atom - The smallest unit of a chemical element
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Unformatted text preview: -Atom consists of a nucleus surrounded by a could of electrons-Nucleus contains protons and neutrons Proton- mass is 1 amu Neutron- mass is 1 amu Electron- mass is vey small Z = atomic number =number of protons= number of extranuclear electrons for a neutral atom N= number of neutrons A= mass number (atomic weight) = Z+N Isotopes:...
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Chapter 3- notes - -Atom consists of a nucleus surrounded...

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