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What r the Greek elements
Wind earth fire water
5 real elements known to the ancients
Carbon, iron , silver , gold ,sulfer
What’s the first alloy and how was it made
Bronze, mix melted copper and tin
Who coined the term atom
Democritus
What famous Irish scientist gave a definition of elements
Boyle
Who listed the known elements at the time and gave us the law of conservation of mass
Lavoisier
What is electrolysis and who invented it
Chemical reaction caused by electric current and Davy
Name 2 elements discovered using electrolysis
Na, k
Who produced the atom theory
Dalton
Give four of its postulates
distinct properties, tiny indestructible, atoms unique, distinct mass
What did dobereiner contribute to the development of the periodic table
Triads groups of three of elements with similar properties
Give an example to illustrate his observations
Cl, br, I , Green, red, purple , gas liquid solid
What did Mendeleev do in his periodic table that had not been done before
Arranged by property and left gaps
What was the contribution of Mosley
Atomic number
State three differences between modern periodic table and mendeleeev’s
No gaps, noble gases, man made elements
Note 
Flashcard (25)