Same: ID: Class: Date: Test Chapter 4 and 25 (70 points Multiple Choice ldentify

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Same: ID: Class: Date: Test Chapter 4 and 25 (70 points Multiple Choice ldentify the choice that best completes the statement or arswers the question You may do all work on this test 1 The nucleus of an aim is a. negatively chargod and has a low density b. positively charged and has more protons than neutrons c negatively charged and has a high density d. the central core and is composed of protons and neutrons The sun combines 2 smaller hydrogen atoms into a larger helium atom in a process called a fission b. a chemical change 2. c fusion d. beta decay The sum of the protons and ncutrons in an atom equals the a. nucleus number b. mass number 3. c avcrage atomic mass d atomic number Which of the following statements is NOT truc? a. The nucleus of an atom is positively charged b. Protons have a positive charge. 4. c Flectrons have a mass of 1 amu Neutrons are located in the nuclcus of an atom. d. 5. How is the number of neutrons in the nucleus of an atom calculated? a. Add the number of electrons and protons together b. Subtract the number of electrons from the number of protons. c. Subtract the number of protons from the mass number d. Add the mass number to the number of electrons. 6. A beta particle is a(n) a helium nucleus b. hydrogen nucleus c electron d. photon 7. What particle is eoclt wngnuckar equation? Mn 25 27 24 b Cr 25 8. Isotopes of the same element have different a. b. numbers of protons numbers of clectrons c. d. atomic numbers numbers of neutrons

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