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BELL WORK! Create a flow chart using the words listed below: Pure Substances Matter Elements Mixtures H2O Compounds Homogeneous Na Heterogeneous Pizza Tea THE DEVELOPMENT OF THE ATOMIC THEORY Chapter 10, Section 1 PREPARING FOR TCAP… atoms SPI 0807.9.1—Matter consists of __________. What we already know: Elements ____________ are made up of one type of atom. Elements are __________ substances. pure Two or more elements combined chemically compound make a ____________. Today’s Goal: Know how the discovery of the atom happened. SCIENCE IS CONSTANTLY CHANGING! Set up the following table in your composition notebook on page 59. Person Idea DEVELOPMENT OF THE ATOMIC THEORY Person: Democritus Idea: Discovered the atom DEVELOPMENT OF THE ATOMIC THEORY Person: John Dalton Idea: Published an atomic theory DEVELOPMENT OF THE ATOMIC THEORY Person: JJ Thomson Idea: Discovered electrons DEVELOPMENT OF THE ATOMIC THEORY Thomson’s Plum-Pudding Model… DEVELOPMENT OF THE ATOMIC THEORY Person: Ernest Rutherford Idea: Discovered protons DEVELOPMENT OF THE ATOMIC THEORY Person: Niels Bohr Idea: Electrons move in energy levels DEVELOPMENT OF THE ATOMIC THEORY Person: Schrodinger and Heisenberg Idea: Electrons are in electron clouds. LET’S REVIEW… Tell your neighbor how Thomson’s PlumPudding model is like chocolate chip cookie dough.
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