1. Fill in the blanks. Each letter corresponds to a specific term. A(n) elegent three Stootomic rearles defines the identity of a(n) element. Isotopes have the same number of AU OA of On the other hand, ions have the same number of prot_ and H from protonts but a various amount of Election S A(n)M forms by losing electrons and contains a N charge. A(n) K__ buta different number gaining electrons and contains a P 2. Draw the basic structure of an atom using the Bohr model. What type of charge does each subatomic particle carry? What are some of the implications in the Bohr model? How does the Bohr model relate to quantum theory in terms of energy? 3. Write the standard nuclear notation for a helium atom. Label the mass number and atomic number. Why is the mass number greater than the atomic number? Do electrons contribute to the mass of an atom? Why or why not? 4. Organic compounds consist mainly of which four elements? Chemical Reactions and Bonds (Chapter 2.3) 5. What are valence electrons, and how do they contribute to chemical reactions? Is an atom with one valence electron more likely to form an lonic or covalent bond? 6. What is a chemical reaction? Write any chemical reaction and label the reactants and products. 7. Fill in the blanks. Each letter corresponds to a specific term. Oxidation occurs when an atom A electrons, while reduction occurs when an atom B. electrons. Oxidation-reduction reactions are also known as _ C reactions. 8. Draw a redox reaction between potassium and chlorine using a Bohr model. Which atom is reduced? 9. Water consists of oxygen and two hydrogens. Draw a water molecule to describe polar covalent bonds and use partial positive and negative charges. Which element is more electronegative and Why? 10. What's the difference between an intramolecular and intermolecular bond? 11. List the different types of chemical bonds starting from strongest to weakest. 12. Which intermolecular forces are found in water