1045 CH 1 Concepts Finding

Homework 2 chemistry is the study of the nature of

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HOMEWORK 2 CHEMISTRY IS THE STUDY OF THE NATURE OF MATTER AND THE CHANGES THAT OCCURS BETWEEN MATTER. A. Matter can be separated and classified into several categories. B. Changes in matter can either be PHYSICAL or CHEMICAL. 1.3 1.4 Matter States – solid, liquids, gases Crystalline vrs amorphous Pure substance -Element & compound Mixtures – heterogeneous & homogeneous Physical changes – decanting, distillation, filtration, freezing, melting, boiling, condensation, sublimation Chemical changes – rust, oxidation Correct Reading Assignment #1 1045 T1 ATOMS & ELEMENTS 3 The Scientific Process is a self- correcting, thinking process used to solve problems. A. The acceptance of the theory that all matter is composed of atoms, illustrates the Scientific Process B. Three Laws were useful evidence for the acceptance of the atomic theory of matter. Law of conservation of matter Law of definite proportions Law of multiple proportions 1.2 2.1, 2.2 2.3 Scientific Process Observation, data, fact Hypothesis Experiment Theory Scientific law Atomic theory of matter Atom Molecule Laws of: conservation, definite proportion Multiple proportion READING ASSIGNMENT #2 (To be handed in 1/10) 25 pts. EOL 1.34 2.40 2.32 2.36 2.39 2.40
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1045 T1 ATOMS AND ELEMENTS PAGE 3 CONCEPT TXT VOCABULARY HOMEWORK 4 Through the Scientific Process, a theory and model of the atom was constructed that atoms are composed of basic particles called protons, electrons & neutrons.
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