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Q SCIE 100 STUDY GUIDE LECTURE NO. 2 1. Know Dalton’s Atomic Theory. 2. Know the structure of an atom and its subatomic particles. 3. What is atomic number and atomic mass. 4. What are isotopes. 5. What are orbitals and how electrons are distributed in these orbitals. Limit yourself to s and p orbitals. 6. What is a periodic table. 7. Understand how the different elements are distributed in rows (periods) and columns (families). 8. You should know what are noble gases, metals, non-metals and semi- conductors. What is their location in the periodic table. 9. Know about the valence electrons, formation of ions and the octet rule. 10. What are chemical bonds and how they are formed. 11. Know about the ionic and covalent bond. 12. Know about pure substances and mixtures. 13. What is a physical change and what is a chemical change. 14. What is a chemical equation, reactants and products. 15. You should know what is a balanced equation and what is a unbalanced equation. 16. What is a chemical reaction and different types of chemical reactions.

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For this week, I was able to learn more about the elements and their properties. For instance, I have gained several insights on how scientists and explorers are able to identify the type of the element they have gathered and these include the experiment on knowing its density, the color when it is put onto a flame, its melting point as well as the boiling point –which is emphasized on this laboratory activity. Moreover, it is denoted that matter is anything that has space and has mass, by which it is composed of different elements and atoms, smallest elemental unit, that are indivisible that cannot be broken down further into many pieces.