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Science Probe 10 Chapter 8

Elements and the Periodic Table

AB
Mercury comes from the Latinfor liquid silver
Cavendish, Priestly, Lavoisiercontributed to our understanding of elements
Nitrogen oxides are sources ofair pollution and smog
John Daltonatomic theory
Different isotopes have differentmass numbers
Dmitri Mendeleevdesigned the periodic table
The Noble Gases are unlikely to reactbecause their outer orbits are full
Li, Na, K, Rb, Cs, FrAlkali Metals
F. Cl, Br, I, AtHalogens
Atoms cannot be chemicallycreated or destroyed
The atomic number of an elementis the number of protons in the nucleus
Each element produces its owncharacteristic visible spectrum


Squamish, BC

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