University:
College
Course:
College Chemistry
Academic year:

2023
Views:

254

Pages:

2
Author:

InterstellarInnovator

Unit 6 Phases of Matter Study Guide & Key Questions Directions: Answer all questions in your composition book on the reserved pages. Answer in complete sentences for full credit. 1. Define the following terms:  atom   electron   nucleus   proton   neutron  atomic mass atomic number isotope chemical symbol period      group metal nonmetal semimetal inert gas 2. What is the smallest unit of an element that maintains the properties of that element? Why? 3. Draw and label a figure of a Boron-11 (B-11) atom and a Helium-4 (He-4) atom. a. Include the correct number of protons, neutrons, and electrons. b. Include electron clouds and the nucleus. 4. What is the charge, mass, and location of a proton in an atom? 5. What is the charge, mass, and location of a neutron in an atom? 6. What is the charge, mass, and location of an electron? 7. What is the overall charge of the nucleus of an atom? 8. Describe an atom’s electron cloud. Where is it? What is there? 9. Why is a neutron essential in the nucleus of an atom? Describe what would happen if neutrons did not exist. 10. What is atomic number and what does it tell us about an atom? 11. What is the difference between a period and a group? a. How many groups are in the periodic table? b. How many periods are in the periodic table? 12. Label regions 1, 2, and 3 in the periodic table below. 13. Using a periodic table as a reference, name the atoms that contain the following number of protons: a. 14 b. 9 c. 2 d. 6 e. 12 f. 3 14. Draw and label a picture of what appears on a square in the periodic table. Be sure to label the square as we outlined on CB 53. 15. What is average atomic mass and how is that different from the atomic mass listed on the periodic table? 16. What is an isotope? What are isotopes named for? What is different in a two atoms of the same element that are isotopes? 17. Which has more mass, B-10 or B-11. How do you know? 18. (Fill in the blank) Elements in the same __________________ of a periodic table are similar. By using a periodic table, name one other atom that is similar to: a. Carbon (C) b. Helium (He) c. Lithium (Li) d. Bromine (Br) e. Nitrogen (N) f. Aluminum (Al) 19. Which type (classification) of element has the following properties: a. Solid at room temperature b. Thermal and electrical conductor c. High melting point d. Malleable e. Ductile f. Shiny 20. Which type (classification) of element has the following properties: a. Dull b. Thermal and electrical insulator c. Reactive d. Brittle 21. Which type (classification) of element has the following properties: a. Gas at room temperature b. Unreactive c. Not naturally found as a solid d. Small amounts exist in Earth’s atmosphere 22. Which type (classification) of element has the following properties: a. Share properties with both metals and nonmetals b. Not ductile c. Varying thermal and electrical conductivity 23. What elements do not normally bond or form compounds? 24. How is the periodic table arranged? 25. Compare the mass and charge (sign and size) of: a. A proton and an electron b. An electron and an neutron c. A proton and a neutron d. An electron and a proton