CHM
1045 CH 1 Concepts Finding

24 26 cathode ray jj experiment on cathode rays e

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2.4-2.6 Cathode ray JJ experiment on cathode rays E. Rutherford experiment on alpha particles Radioactivity, alpha particles protons, neutrons (nucleus), electrons (energy levels) 2.42 2.48 5 The Periodic Table is based upon increasing atomic number (protons) and physical & chemical properties of the elements repeat in cyclic patterns 2.6 p 56-57 2.7 Atomic number Family or group vrs Period or series Periodic Law Metals vrs. Metalloids vrs nonmetals Alkali, alkaline, transition metals, halogens, noble gases CORRECT READING ASSIGNMENT #2 6 The PROTON defines the element. Changing the number of neutrons or electrons in an atom changes some properties of the atom. ISOTOPES are elements with the same atomic number (protons) but different mass numbers (neutrons). When electrons are removed or added to an atom, charged particles called IONS result. 2.6 P 57-60 2.8 P 65-66 Isotopes & isotopic notation (2 types) Atomic mass & AMU Hydrogen, deuterium & tritium Ions – cations vrs. anions 2.54 2.60 2.62 ***To be completed after WEEK 2. You can use these questions to ask questions in the review session to clarify information**** TEST 1 REV PAGES QUESTIONS The questions in this review are similar to questions you will see on the test. You MUST show the reasons or math involved to answer . The correct answers are provided at the bottom of the question set. NO CREDIT WILL BE GIVEN FOR COPYING THE ANSWERS . CH 1 P 33 1, 2, 3, 4, 5, 7, 8, 9, 11 CH 2 P 74 3, 5, 6, 8, 9, 10, 11
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