Physical Sc. 2.1-2.3 Quiz

1. All matter is composed of ____. 2. Which scientist originally conceived the idea of atoms? 3. Which scientist proved matter could not be created or destroyed? (Law of Conservation) 4. What are the 3 models we use in science? 5. What are the 4 tenets to Dalton’s atomic theory? 6. How did Thompson discover the electron? 7. How did his student (Rutherford) discover the proton? 8. What model of the electron is the most widely accepted one in science today? 9. How many different types of atoms are found in pure elements? 10. What 5 characteristics of metals set them apart from other elements?

1. What are the 4 main types of chemical bonds? 2. Which subshell contains 3 orbitals and holds 6 electrons? 3. How many total electrons can shell number 4 hold? 4. What are the 2 components to the Aufbau principle? 5. Where are valence electrons found? 6. What are Lewis dot diagrams? 7. Define the Octet rule. 8. Ionic bonds usually result in ____ _____. 9. In covalent bonds, where are the electrons usually found? 10. Where do H bonds usually occur? `

1. Write the empirical formula for C6H12O6. 2. Write the name of the following ionic compound: KCl 3. Write the name of the following covalent compound: N2O4 4. Balance this equation: K+2H2O=2KOH+H2 5. Draw the Lewis Dot Structure for O and N 6. Write the following as a synthesis reaction: Na+Cl= 7. Single replacement: MgBr+Ca= 8. Double replacent: MgBr+CaCl= 9. What is the difference between endo and exothermic reactions?