atomic structure practice test www wappingersschools org/cms/lib/NY01001463/Centricity/Domain/1471/Atomic 20Structure 20Practice 20Test 20answer 20key pdf Which two particles each have a mass approximately equal to one atomic mass unit? A) An atom is mostly empty space with a dense, positively charged nucleus B)
Atomic Structure Practice Test 1 pdf - School District of Clayton www claytonschools net/site/handlers/filedownload ashx?moduleinstanceid=4203&dataid=41680&FileName=Atomic 20Structure 20Practice 20Test 201 pdf ATOMIC STRUCTURE PRACTICE TEST #1 1 A sample of gas is electrically c trends reoccur so that groups of elements share the similar chemical properties
Atomic Structure Practice Test - My eCoach my-ecoach com/online/resources/3709/atomic_structure_practice_test1 pdf Atoms cannot be divided, created, or destroyed b The number of protons in an atom is its atomic number c In chemical reactions, atoms are combined,
Unit 1: Chemistry REVIEW “Practice Test” misszukowski weebly com/uploads/9/7/4/6/97462532/chapter_4_practice_test__new__key pdf Write the name of the Atom shown in each Bohr Diagram in the box below: 17 Identify the number of electrons in the valence shell of the following atoms
Chem 100 Exam II (Practice Test) www cerritos edu/chemistry/chem_100/Practice_Exams/100exam2PracF03 pdf The symbol of this particle is p+ or H For the following element, 30Zn64 answer the following questions related to the configuration 1 The atom contains the
ATOMIC STRUCTURE PAST PAPER QUESTIONS www scienceexamssorted co uk/wp-content/uploads/2020/09/2 -Atomic-structure-past-paper-questions pdf Science Exams Sorted 2020 www scienceexamssorted co uk All atoms of element E in this sample contain What is the chemical symbol of this non-metal?
ANSWERS- Ch 3 Practice Test - muncysd org www muncysd org/cms/lib/PA06000076/Centricity/Domain/92/Practice_test_answers_for_Chapter_3 pdf Neutral atoms of the same element can differ in a chemical properties b mass number :: c atomic number
Practice Test Chs 1 & 2 ap kmacgill com/wp-content/uploads/2012/09/ch_01_02_prac_test pdf Practice Test Chs 1 & 2: Chemical Foundations and Atoms, Formulas & Ions Name___________________________________ MULTIPLE CHOICE
Name_____________________ www colby edu/chemistry/CH112/Exams/Sample1-KEY pdf Answers to Sample Exam Questions #1 b) Atoms of the same element can be different d) A chemical reaction involves rearrangement of atoms
CH 3_QUIZZES for Sections 1-2-3 pdf - Kenilworth Public Schools www kenilworthschools com/UserFiles/Servers/Server_7985/File/Mr 20Novak's 20Chemistry/CH 203_QUIZZES 20for 20Sections 201-2-3 pdf QUIZ Assessment CH#3 Atoms: The Building Blocks of Matter QUIZ CH #3 - Seet #1 The fact that every sample of a particular chemical compound
____ 1. If 6.0 g of element K combine with 17 g of element L, how many grams of element K combine with 85 g of
element L? a. 17 g b. 23 g c. 30. g d. 91 g ____ 2. Which of the following is not part of Dalton's atomic theory? a. Atoms cannot be divided, created, or destroyed. b. The number of protons in an atom is its atomic number. c. In chemical reactions, atoms are combined, separated, or rearranged. d. All matter is composed of extremely small particles called atoms. ____ 3. Dalton's atomic theory agrees with modern atomic theory except for the statement that a. all matter is made up of small particles. b. atoms are not divided in chemical reactions. c. atoms of the same element are chemically alike. d. all atoms of the same element have the same mass. ____ 4. The rays produced in a cathode tube are a. unaffected by a magnetic field. c. found to carry a positive charge. b. deflected away from a negative plate. d. striking the cathode.____ 5. After measuring the ratio of the charge of a cathode-ray particle to its mass, Thomson concluded that the
particles a. had no mass. c. had a very large mass. b. had a very small mass. d. carried a positive charge. ____ 6. Whose series of experiments identified the nucleus of the atom? a. Rutherford b. Dalton c. Chadwick d. Bohr____ 7. Because most particles fired at metal foil passed straight through, Rutherford concluded that
a. atoms were mostly empty space. c. electrons formed the nucleus. b. atoms contained no charged particles. d. atoms were indivisible.____ 8. A nuclear particle that has about the same mass as a proton, but with no electrical charge, is called a(n)
a. nuclide. b. neutron. c. electron. d. isotope.____ 9. Which part of an atom has a mass approximately equal to 1/2000 of the mass of a proton or a neutron?
a. nucleus b. electron c. proton d. neutron____ 10. The smallest unit of an element that can exist either alone or in combination with other such particles of the
same or different elements is the a. electron. b. proton. c. neutron. d. atom. ____ 11. The atomic number of oxygen, 8, indicates that there are eight a. protons in the nucleus. c. neutrons outside the nucleus. b. oxygen nuclides. d. energy levels in the nucleus. ____ 12. The total number of protons and neutrons in the nucleus of an atom is its a. atomic number. b. atomic weight. c. mass number. d. atomic mass. ____ 13. a. decreases. b. increases. c. remains the same. d. doubles each time the mass number increases. ____ 14. All atoms of the same element have the same a. atomic mass. b. # of neutrons. c. mass number. d. atomic number. ____ 15. The average atomic mass of an element a. is the mass of the most abundant isotope. c. cannot be calculated. b. may not equal the mass of any isotopes. d. always adds up to 100.____ 16. An aluminum isotope consists of 13 protons, 13 electrons, and 14 neutrons. Its mass number is
a. 13. b. 14. c. 27. d. 40. ____ 17. Carbon-14 (atomic number 6), the radioactive nuclide used in dating fossils, has a. 6 neutrons. b. 8 neutrons. c. 10 neutrons. d. 14 neutrons. ____ 18. Phosphorus-33 (atomic number 15) contains a. 33 protons. b. 18 neutrons. c. 33 neutrons. d. 18 protons.25. Why do scientists use Dalton's theory, even though parts of it have been proven wrong? How much of
26. What can you determine about the atomic structure of an element if you know the atomic number of the
element and mass numbers of its isotopes? What additional information is needed to determine the average
atomic mass of the element? How do you determine the average atomic mass of the element? 27. Unknownium has two common isotopes, uknownium- 85 and unknownium-87. The abundance of 85Uk isIsotopes are atoms of the same element with different numbers of neutrons, and therefore, different mass
numbers.Dalton's theory led to the modern theory of the atom. Although scientists now know that atoms can be divided
and that elements exist as isotopes, most of his early theory is still accepted.The atomic number equals the number of protons in the nucleus of an atom and also equals the number of
electrons in the neutral atom. The mass number is the sum of the number of protons and neutrons and can be
used, with the atomic number, to find the number of neutrons in each isotope. Each isotope of the element has
a different mass number but the same atomic number as the element. In order to determine the average atomic mass of the element, you needed to know the relativeabundance and the exact mass of each isotope. Then, multiply the relative abundance (in decimal form) times
the atomic mass for each isotope, and adding the results.