Search
Info
Warning
Danger

Study Resources (Chemistry)

4.2   Short Answer Questions 1) One symbol for the β particle is β. Another symbol for the same particle is __________. 2) Tc  →  Tc  +  __________ 3) U  +  n  →  __________  +  Kr  +  3n  +  energy 4) Sr  →  __________  +  e  +  energy 5) The radiation dose required to produce death.
0 Views
View Answer
21) Which of the following describes an oxidation reaction? A) loss of electrons or loss of oxygen B) loss of electrons or gain of oxygen C) loss of electrons or gain of hydrogen D) gain of electrons or gain of oxygen E) gain of electrons or loss of H 22) In an oxidation-reduction reaction, the substance.
0 Views
View Answer
51) The types of compounds that use prefixes in their names are A) ionic compounds. B) ionic compounds involving transition metals. C) polyatomic ions. D) covalent compounds. E) compounds that contain polyatomic ions. 52) The correct name for the compound N2O3 is A) nitrogen oxide. B) nitrogen trioxide. C) dinitride trioxide. D) dinitrogen oxide. E) dinitrogen trioxide. 53) What is the formula.
0 Views
View Answer
31) The name of Al2(SO4)3 is A) aluminum(III) sulfate. B) dialuminum trisulfate. C) dialuminum sulfate. D) dialuminum trisulfide. E) aluminum sulfate. 32) A group of covalently bonded atoms that has an overall electrical charge is called a(n) A) ionic compound. B) anion. C) polyatomic ion. D) cation. E) molecule. 33) Which of the following polyatomic ions has a positive charge? A) hydroxide B) sulfate C).
0 Views
View Answer
3.4   Matching Questions Do the following represent elements in a group, a period, or neither? A) period B) neither C) group 1) Li, C, F 2) F, S, P 3) O, S, Se 4) He, H, I Match the correct symbols with the names of elements.   A) C B) Co C) Cu D) Cl E) Ca 5) calcium 6) copper 7) carbon 8) chlorine 9) cobalt .
0 Views
View Answer
3.1   Multiple-Choice Questions 1) The primary substances of which all other things are composed are A) molecules. B) compounds. C) elements. D) electrons. E) protons. 2) Au is the symbol for A) gold. B) silver. C) argon. D) aluminum. E) sodium. 3) aluminum A) Al B) Am C) Au D) Sn E) Ag 4) iron A) Ir B) Fs C) Fe D) In E) FE 5) sodium A) So B) Na C) No D) Sm E) Au 6) potassium A) P B) Po C).
4 Views
View Answer
  Give the correct charge for ions of the following elements. A) 1- B) 0 C) 2- D) 3+ E) 2+ 10) Ca 11) Cl 12) O 13) Al 14) K Indicate the type of bonding you would expect between the following elements. A) nonpolar covalent B) ionic C) none D) polar covalent 15) Na and F 16) N and F 17) F and F 18) He and F 19).
1 Views
View Answer
11) Isotopes have the same atomic number but different mass numbers. 12) Potassium has one valence electron. 13) The electron configuration of potassium is 1s22s22 p63s1. 14) A lithium atom is larger than a potassium atom. 15) A sodium atom is larger than a silicon atom. 16) Chlorine has a higher ionization energy than aluminum. 17).
0 Views
View Answer
  Give the correct number of electrons. A) one B) seven C) two D) eight E) five 10) in the second energy level of magnesium 11) in the highest occupied energy level of chlorine 12) in the outer energy level of nitrogen 13) in the first energy level of chlorine 14) in the third energy level of sodium Classify the following elements. A).
1 Views
View Answer
7.1   Multiple-Choice Questions 1) Which of the following is NOT part of the kinetic theory of gases? A) A gas is composed of very small particles. B) There is very little empty space in a gas. C) Gas particles move rapidly. D) Gas particles do not attract or repel one another. E) Gas particles move faster.
5 Views
View Answer
31) Iodine-131 decays by beta emission to A) iodine-132. B) tellurium-131. C) iodine-130 D) bromine-131 E) xenon-131. 32) A sample of cerium-141 for a diagnostic test was dissolved in saline solution to an activity of 4.5 millicuries/mL. If the patient undergoing the test needs a dose of 10. millicuries, how much of the solution should be.
1 Views
View Answer
4.1   Multiple-Choice Questions 1) What is the nuclear symbol for a radioactive isotope of copper with a mass number of 60? A) Cu B) Cu C) 29Cu D) Cu E) Cu 2) The nuclear symbol of helium, He, is also the symbol for designating a(n) A) proton. B) neutron. C) gamma ray. D) beta particle. E) alpha particle. 3) The symbol e is.
3 Views
View Answer
4.4   Matching Questions Indicate whether each of the following is characteristic of the fission or fusion process. A) both fission and fusion B) fusion C) fission 1) A large nucleus is split into smaller nuclei. 2) Very high temperatures must be achieved to initiate the reaction. 3) This nuclear process provides the energy of the Sun. 4) This.
1 Views
View Answer
2.4   Matching Questions Identify the physical state(s) corresponding to the regions on the cooling curve below. A) solid and gas B) liquid and gas C) gas D) liquid and solid E) solid 1) A 2) B 3) C 4) D 5) E Match the state of matter with each of the following descriptions of a substance. A) solid B) liquid C) solid + liquid D) liquid.
0 Views
View Answer
21) Identify the metalloid in the following list. A) sulfur B) fluorine C) silver D) copper E) germanium 22) Semiconductors are located in the periodic table on (or in) the A) left side of the table. B) right side of the table. C) line dividing metals from nonmetals in the table. D) first period of the table. E) last period of.
0 Views
View Answer
4.3   True/False Questions 1) The production of nitrogen-13 and a neutron from boron-10 by bombardment with a helium-4 nucleus is an example of radioactive decay. 2) The correct symbol for hydrogen-3 is He. 3) An alpha particle is emitted when Am-241 decays to Np-237. 4) A beta particle is emmited when Co-60 decays to.
15 Views
View Answer
11) The process in which a nucleus spontaneously breaks down by emitting radiation is known as A) transmutation. B) transformation. C) fusion. D) a chain reaction. E) radioactive decay. 12) The nuclear reaction shown below is an example of what type of process? A) fusion B) fission C) translation D) alpha emission E) beta emission 13) Gamma rays require the heaviest shielding.
1 Views
View Answer
21) The temperature is changed from 50 °C to -150 °C at constant pressure. A) A B) B C) C D) A and B E) B and C 22) Complete the following statement:  In Charles's Law, the volume of a gas __________ when the __________ decreases. A) increases; temperature B) increases; quantity of gas C) increases; pressure D) decreases; temperature E).
0 Views
View Answer
6.2   Bimodal Questions 1) In this reaction, what is the correct coefficient for hydrogen gas? ? H2  +  ? O2  →  ? H2O A) 1 B) 2 C) 3 D) 4 E) 5 Barium chloride and sodium sulfate react according to the following equation. BaCl2  +  Na2SO4  →  BaSO4 +  2NaCl 2) How many moles of barium sulfate are.
0 Views
View Answer
71) The carbon tetrachloride molecule, CCl4, is A) a polar molecule with polar bonds. B) a nonpolar molecule with polar bonds. C) a nonpolar molecule with nonpolar bonds. D) a polar molecule with nonpolar bonds. E) a polar molecule with ionic bonds. 72) The ammonia molecule ( NH3 ) is A) a polar molecule with polar bonds. B).
0 Views
View Answer
5.1   Multiple-Choice Questions 1) The number of valence electrons found in an atom of a Group A element is equal to A) its atomic number. B) its mass number. C) its group number. D) eight. E) eight minus the group number. 2) Valence electrons are electrons located A) in the outermost energy level of an atom. B) in the.
4 Views
View Answer
6.1   Multiple-Choice Questions 1) A chemical equation is balanced when A) the total number of molecules is the same in reactants and products. B) the total number of ions is the same in reactants and products. C) the sum of the coefficients of the reactants is equal to the sum of the coefficients of.
5 Views
View Answer
21) Nitrogen-17 is a beta emitter.  What is the isotope produced in the radioactive decay? A) C B) B C) N D) F E) O 22) The nuclear reaction Sn  →  Sb  +  ? A) fusion. B) fission. C) translation. D) alpha emission. E) beta emission. 23) What is the radioactive particle released in the following nuclear equation? Sr  →  Y  +  ?.
0 Views
View Answer
51) What is the electron configuration for aluminum? A) 1 s22s22 p63s23p1 B) 1 s22s22p63s23p3 C) 1 s22s22p63s23p5 D) 1 s22s22p63s23p6 E) 1 s22 22p63s23p8 52) Which of the following electron configurations is impossible? A) 1s22s22p63s23p1 B) 1s22 s42p63s23p3 C) 1s22s22p63s23 p5 D) 1s22s22p63s23p6 E) 1s22s22p63s23p3 53) What is the electron configuration for potassium (atomic number 19)? A) 1s22s22p63s23p7 B) 1s22s22p63s23p53d2 C) 1s22s22p83s23p5 D) 1s22s22p63s23p64s1 E) 1s22s22p63s23p54s1 54).
0 Views
View Answer
6.3   Short Answer Questions 1) What type of reaction is the following? 2KClO3O3  →  2KCl  +  3O2 2) What type of reaction is the following? 3) The number of particles in 1 mole of hydrogen gas is __________. 4) The molar mass of copper(II) nitrate, Cu(NO3)2 is __________. 5) What is the mass of 1 mole.
0 Views
View Answer
6.4   True/False Questions 1) The following reaction is balanced. 2) The following is a decomposition reaction. 2KClO3  → 2KCl + 3O2 3) Loss of electrons is an  oxidation. 4) Avogadro's number is the number of grams in a mole. 5) The molar mass of silver is 47 g. 6) The molar mass of magnesium is 24.3.
0 Views
View Answer
3.3   True/False Questions 1) The symbol for potassium is P. 2) The symbol for gold is Au. 3) Sulfur is a nonmetal. 4) Chromium is a metal. 5) Radon is a metal. 6) Mercury is a metal. 7) Iodine is a metal. 8) An electron has a positive charge. 9) Protons and neutrons are located in the nucleus of.
0 Views
View Answer
5.2   Short Answer Questions Identify each of the following molecules as polar or nonpolar. 1) carbon tetrachloride 2) water 3) carbon dioxide 4) hydrogen sulfide 5) hydrogen fluoride 6) carbon monoxide 7) nitrogen trichloride 8) carbon tetrachloride 9) potassium oxide 10) carbon dioxide 11) sodium fluoride 12) dihydrogen sulfide 13) The weakest type of force between particles of a substance is termed __________. 14) Are.
0 Views
View Answer
6.5   Matching Questions Identify the energy associated with each of the labeled parts of the following diagram. A) heat of reaction B) activation energy C) energy of reactants D) energy of products 1) Region A 2) Region B 3) Region C 4) Region D Identify the letter of the diagram corresponding to the given type of reaction. A) Diagram A B) Diagram.
2 Views
View Answer
11) Which of the following properties is NOT a characteristic of the Group 1A(1) elements (alkali metals)? A) They are shiny. B) They are good conductors of heat. C) They react vigorously with water. D) Most of them are liquids at room temperature. E) They are good conductors of electricity. 12) The Group 8A(18) elements A) are.
0 Views
View Answer
5.3   Matching Questions Match the correct name of the polyatomic ions with the formulas given. A) sulfate B) nitrate C) hydrogen carbonate D) hydroxide E) nitrite F) oxide G) phosphate H) carbonate I) hydrogen sulfite J) carbonite K) sulfite L) hydrogen sulfate M) phosphate 1) NO3- 2) CO32- 3) SO42- 4) SO32- 5) PO43- 6) NO2- 7) HCO3- 8) HSO4- 9) OH- .
0 Views
View Answer
  Identify each of the following transformations as a chemical or physical change A) physical B) chemical 11) water evaporating 12) a button falling off of a shirt 13) silver tarnishing 14) cutting the grass 15) a nail rusting 16) baking a cake 17) placing photographs in a scrapbook 18) formation of green leaves on a plant 19) burning leaves .
0 Views
View Answer