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chemistry test review

Kennedy Pina English 29 cards

Cards in this deck (29)

  1. 1Dalton's atomic theory included which idea?Atoms of the same element are always identical
  2. 2Which of the following is true about subatomic particlesA neutron is nearly equal in mass to a proton
  3. 3Which of the following is not apart of the Dalton's atomic theory?Atoms are always in motion.
  4. 4In the gold foil experiment, alpha particles (helium nuclei) were shot at a thin sheet of gold foil onto a fluorescent screen. What was discovered about the atom as a result of this experiment?Atoms contain positively charges central nucleus, most of the volume of an atom is empty space, most if the mass of an atom is in a small central nucleus, and so basically all of the above :)
  5. 5The most common isotopes of potassium (k) has 9 protons and 20 neutrons. What are its atomic number and mass number?atomic number=19 ; mass number= 39
  6. 6all atoms (not ions) are....._________Neutral with the number of protons equaling the number of electrons
  7. 7The particles that form the nucleus of an atom are__________Protons and Neutrons
  8. 8as a consequence of the discovery of the nucleus by ruther ford, which model of the atom is thought to be true?Most of the atom is empty space and electrons are located outside the nucleus
  9. 9The atomic number of an element is the total number of which particles in the nucleus?Protons
  10. 10What does the number 84 in the name krypton-84 represent?The mass number
  11. 11all atoms of isotopes of the same element have the same______________Number of protons
  12. 12Isotopes of the same element have different_______________Number of Neutrons
  13. 13In which of the following sets is a symbol of the element, the number of protons, and the number of electrons given correctly?In 49 protons 49 electrons
  14. 14How many protons, electrons, and neutrons does an atom with atomic number 50 and mass number 125 contain?50 protons, 50 electrons, 75 neutrons
  15. 15In which of the following is the number of neutron correctly represented?238
    U has 146 neutrons
    92
  16. 16If E is the symbol for an element, which two of the following symbols represent isotopes of the same element?21
    E
    10
  17. 17How do the isotopes hydrogen-2 differ?Hydrogen-2 has two protons; hydrogen-1 has one
  18. 18which of the following statements is not true?Electrons are negatively charged and have a mass of 1 amu
  19. 19Using a periodic table, identify the name of the element whose symbol is S.sulfur
  20. 20Gold is a yellow metal that can be hammered into thin sheets of foil and it is chemically unreactive with most substance. iron is a silver colored metal that rusts easily when exposed to the air. The difference in their properties can be attributed to each element's_______Number of Protons
  21. 21After discovering the electron and realizing it was a part of all atoms, .J.J. Thomson described a model of the atom called the Plum Pudding model. According ti this older, incorrect description of the atom, most of an atom's mass located?spread evenly throughout the atom
  22. 22The most common isotope of lead (pd) has 82 protons and 126 neutrons. What are its atomic number and mass number?the atomic number is not (126, 208, 82, 126) the mass number is not (208, 82, 126, 82)
    so its none of the above
  23. 23In a neutral atom the number of electrons is equal to ___________Atomic number
  24. 24(PU) is the chemical symbol for which element?Use a periodic table to determine the atomic number of zinc?
  25. 25In the drawing below< which path is the correct one for a cathode ray?Path A
  26. 26What are the charges on the three subatomic particles in a atom?Proton is positive; neutron is neutral; electron is negative
  27. 27C 6 H 12 O 6 is the formula of the Formula for glucose which is a simple sugar. This formula represents which three elementsCarbon, hydrogen, and oxygen
  28. 28H 2 SO 4 is the formula or strong acid, sulfuric acid. how many atoms are represented in the formula7
  29. 29which statement is true about electrons and protons in a neutral atom?the number of the electrons is equal to the number of protons; protons are located in the nucleus of the atom electrons are located outside the nucleus.

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Flashcards on chemistry test review, created by Kennedy Pina on 17/10/2018.
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Kennedy Pina
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