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Chapter Resources

Chapter Resources. 17. Click on one of the following icons to go to that resource. gpscience.com. Image Bank. Foldables. Video Clips and Animations. Chapter Summary. Chapter Review Questions. Standardized Test Practice. Chapter Resources. 5. gpscience.com. Image Bank. 17.

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Chapter Resources

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  1. Chapter Resources 17 Click on one of the following icons to go to that resource. gpscience.com Image Bank Foldables Video Clips and Animations Chapter Summary Chapter Review Questions Standardized Test Practice

  2. Chapter Resources 5 gpscience.com

  3. Image Bank 17 Click on individual thumbnail images to view larger versions.

  4. Image Bank 17 Transfer Images • To transfer images to your own power point follow the following steps: • Open the “Resource” file from the CD-ROM disc – view the file in the “normal view” or “slide sorter view” mode - go to slide #2 – from there you can click through the images and follow these instructions. Click once on the image. • Copy the image • Go to your own power point document • Paste the image.

  5. Image Bank 17 Table – Symbols of Some Elements

  6. Image Bank 17 Nucleus of an Atom

  7. Image Bank 17 Dalton’s Atomic Model

  8. Image Bank 17 Electron Cloud

  9. Image Bank 17 Table – Subatomic Particle Masses

  10. Image Bank 17 Table – Mass Numbers of Some Atoms

  11. Image Bank 17 Boron-10 Boron-11

  12. Image Bank 17 Table – Mendeleev’s Predictions

  13. Image Bank 17 Energy Levels

  14. Image Bank 17 Section of Periodic Table

  15. Image Bank 17 Group 1 Dot Diagram

  16. Image Bank 17 Chlorine

  17. Image Bank 17 Sodium Chloride

  18. Image Bank 17 Neon

  19. Image Bank 17 Regions of Periodic Table

  20. Image Bank 17 Periodic Table

  21. Foldables 17 Scientific Processes Make the following Foldable to help identify what you already know, what you want to know, and what you learned about science.

  22. Foldables 17 Fold a vertical sheet of paper in half from side to side. Make the front edge about 1.25 cm shorter than the back edge.

  23. Foldables 17 Turn lengthwise and fold into thirds.

  24. Foldables 17 Unfold and cut only the top layer along both folds to make three tabs. Label each tab.

  25. Foldables 17 Identify Questions Before you read the chapter, write what you already know about science under the left tab of your Foldable, and write questions about what you’d like to know under the center tab. After you read the chapter, list what you learned under the right tab.

  26. Video Clips and Animations 17 Click image to view movie To view the next video clip or animation click here.

  27. Video Clips 17

  28. Reviewing Main Ideas 17.1 Structure of an Atom • A chemical symbol is a shorthand way of writing the name of an element. • An atom consists of a nucleus made of protons and neutrons surrounded by an electron cloud. • Quarks are particles of matter that make up protons and neutrons. • The model of the atom changes over time. As new information is discovered, scientists incorporate it into the model.

  29. Reviewing Main Ideas 17.2 Masses of Atoms • The number of neutrons in an atom can be computed by subtracting the atomic number from the mass number. • The isotopes of an element are atoms of that same element that have different numbers of neutrons.

  30. Reviewing Main Ideas 17.2 Masses of Atoms • The average atomic mass of an element is the weighted-average mass of the mixture of its isotopes. Isotopes are named by using the element name, followed by a dash, and its mass number.

  31. Reviewing Main Ideas 17.3 The Periodic Table • In the periodic table, the elements are arranged by increasing atomic number resulting in periodic changes in properties. Knowing that the number of protons, electrons, and atomic number are equal gives you partial composition of the atom. • In the periodic table, the elements are arranged in 18 vertical columns, or groups, and seven horizontal rows, or periods.

  32. Reviewing Main Ideas 17.3 The Periodic Table • Metals are found at the left of the periodic table, nonmetals at the right, and metalloids along the line that separates the metals from the nonmetals. • Elements are placed on the periodic table in order of increasing atomic number. A new row on the periodic table begins when the outer energy level of the element is filled.

  33. Chapter Review 17 Question 1 Who proposed the idea that atoms make up all substances? A. Aristotle B. Socrates C. Democritus D. Euripides

  34. Chapter Review 17 Answer The answer is C. Later, Aristotle disputed Democritus’s theory and proposed that matter was uniform throughout, not composed of smaller particles.

  35. Chapter Review 17 Question 2 In order to study quarks, scientists must force __________ to break apart. A. atoms B. electrons C. neutrons D. protons

  36. Chapter Review Answer The answer is D. Particle accelerators are used to accelerate charged particles and force them to collide with protons, breaking them apart.

  37. Chapter Review 17 Question 3 Describe the model of the atom that is in use today.

  38. Chapter Review 17 Answer In the electron cloud model, electrons do not follow fixed orbits as in the Bohr model, but tend to occur more frequently in certain areas around the nucleus at any given time.

  39. Chapter Review 17 Question 4 Atoms of the same element that have different numbers of neutrons are called __________. A. isomers B. isotopes C. identical D. isobars

  40. Chapter Review 17 Answer The answer is B. Isotopes are identified by using the name of the element followed by the mass number of that isotope, as in boron-10.

  41. Chapter Review 17 Question 5 Which group is most likely to contain elements that are good conductors of electricity?

  42. Chapter Review 17 A. Group 11 B. Group 15 C. Group 16 D. Group 17

  43. Chapter Review 17 Answer The answer is A. Group 11 contains metals, which are better conductors of electricity than the nonmetals of Groups 15, 16 and 17.

  44. Standardized Test Practice 17 Question 1 Which is positively charged? A. proton B. neutron C. electron D. quark

  45. Standardized Test Practice 17 Answer The answer is A. Neutrons are electrically neutral, and electrons are negatively charged.

  46. Standardized Test Practice 17 Question 2 Based on the table, which of the following statements is correct?

  47. Standardized Test Practice 17 A. The atomic number is equal to the number of neutrons in an atom.

  48. Standardized Test Practice 17 B. The symbol for each element in the periodic table is the first letter of the name of the element.

  49. Standardized Test Practice 17 C. If you know the mass number and the atomic number of an atom, you can calculate the number of neutrons in the atom.

  50. Standardized Test Practice 17 D. Atoms of the same element always have the same number of neutrons.

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