GoConqr has a new look! Let us know what you think.

Sign up free

Flashcards

Exam 1 Chem

Agasana Viengmany English 74 cards

Cards in this deck (74)

  1. 1True or False Chemistry happens when plants growtrue
  2. 2Silver is gray a. observation b. hypothesis c. experiments theorya. observation
  3. 3true or false Part of a successful study plan is to view "Course Materials" regularlytrue
  4. 43.4 kg is a measurement in: A. volume B. mass C. lengthb. mass
  5. 5The standard number for 9.3 x 10 3 is: A. 0.0093 B. 9300 C. 93B. 9300
  6. 6True or false The diameter of a red blood cell is 6 x 10-4 cm. The number 6 x 10-4 cm is an exact numberfalse measured number because length is obtained from measuring tool
  7. 7The answer in correct significant figures for: 567000/ 3.0 A. 200000 B. 190000 C. 189000B.190000
  8. 8Complete the following equality: ml = ? A. 1000 L B. 0.001 L C. 100 LB. 0.001 L
  9. 9A snail moves 1.3 inches every minute. A conversion factor for this is: minute/(1.3 inches) True or Falsetrue
  10. 10For Problem Setup, Step 4 is: Use conversion factors to cancel the given unit and provide the needed unit. True or falsetrue
  11. 11A biker travels 300.0 miles in one day. How many miles does he travel in one hour? A. 12.50 B. 7200 C. 10.00 D. 25.00A
  12. 12How many mL of gasoline are in 100g gasoline? Density gasoline = 0.66g/ml A. 66 B. 152 C. 100B
  13. 13The estimated digit in 125.04g is: A. second decimal place (0.04) B. 0 C. ten's place (120) D. first decimal place (0.0)A
  14. 14180,000,000g in scientific notation is 1.8 x 108 g True FalseTrue
  15. 15Blueberry fiber cakes contain 51% dietary fiber. How many grams of fiber iis contained in a 60.0 g cake? A. 118 B. 30.6 C. 51B
  16. 16Of the following, which is the smaller: centi or kilo A. kilo B. centiB
  17. 17The equality 100cm = 1m, is expressed by the conversion factor: A. 0.01L / 1 ml B. 1000mm / m C. 100cm / 1mC
  18. 18If I chop the log into smaller pieces, it will burn better. This is a(n): A. hypothesis B. observation C. experimenta. hypothesis
  19. 19What is the volume, in mL, of 250 g of milk. (density of milk = 1.04 g/mL) A. 1.04 B. 263 C. 240 D. 250C
  20. 20A suncreen contains titanium dioxide, vitamin E and vitamin C. This suncreen is "chemical free" True or Falsefalse
  21. 21bubbly soda water is A. heterogeneous B. homogeneousA
  22. 22Melting ice cream, is a: A. Chemical change B. change of stateB
  23. 23What is 100K in degree C? A. 173 B. -173 C. 373B
  24. 24Running is an example of kinetic energy True FalseTrue
  25. 25How many joules are needed to raise the temperature of 3.25 g of Aluminum from 25.0°C to 77.0°C? (SH = 0.897) A. 152 B. 0.0053 C. 0.0697A
  26. 26What is the specific heat of a metal if 15.0 g absorbs 145J of energy and the temperature rises from 20.0oC to 23.0oC? A. 322 B. 0.310 C. 3.22C. 3.22
  27. 27A muffin contains 19.0 g of fat, 49.0 g carbohydrate, 5.0 g protein. How many Cal does it contains? A. 267 B. 560 C. 387C
  28. 28The element with the chemical symbol Co is A. Chromium B. Cobalt C. CopperB
  29. 29Potassium is a: A. metal B. nonmetal C. metalloidA
  30. 30In a sample of an unknown substance, X, there is 75.771 % of 35X atoms (atomic mass 34.96885) and 24.229% of 37X atoms (atomic mass 36.96590). What is the atomic mass of X? A. 35.45 B. 8.96 C. 26.50A
  31. 31An atom of Carbon has 7 neutrons. What is its mass number? A. 7 B. 6 C. 13C
  32. 32Two atoms of different elements combine to form a compound true or falsetrue
  33. 33The temperature of 50oF in Celsius is: A.122 B.10 C.323B
  34. 34The proton and neutron have opposite charges True or falsefalse; electrons have opposite charge w/ proton; neutron is neutral
  35. 35roller skating is kinetic energy true or falsetrue
  36. 36NaCl is a pure substance true or falsetrue
  37. 37The symbol of the element described by: alkali metal in period 4 A. Ca B. Mg C. K D. NaC
  38. 38The substance has definite volume but no definite shape. This substance is in: A. solid state B. gas state C. liquid stateC
  39. 39The atomic mass for Sr is 87.62 True or Falsetrue
  40. 40An atom of Fe has mass number of 56, therefore it has 30 neutrons True or FalseTrue
    26= atomic # = Protons
    mass # - 56
    56-26= 30 neutrons
    DOUBLE CHECK
  41. 41How many calories is equal to 250 joules? A. 1046 B. 1.046 C. 60 D. 0.60C
  42. 42The symbol P stands for Potassium True or Falsefalse, K
  43. 43food is digested; this is a chemical change True or Falsetrue
  44. 44The electron dot structure for Mg : . Mg . True or Falsetrue; valence electrons
  45. 45183 J of heat is absorbed by a substance, and its temperature rises from 35.0oC to 78.6oC. The Specific heat of the substance is 0.227 J/goC. What is the mass of the substance? A. 18.5 J B. 0.953 g C. 18.5 gc
  46. 46Shorter wavelengths have: A. lower frequencies B. higher frequenciesB
  47. 47An electron in an atom moves from the second energy level (n =2) to the third energy level (n = 3). Energy is: A. emitted B. not changed C. absorbedC
  48. 48The number of electrons that can occupy a f orbital are: A. 3 B. 7 C. 1414 electrons but there are 7 orbitals
  49. 49Antimony belongs to the: A. p block B. f block C. d block D. s blockA
  50. 501s2 2s2 2p6 3s2 3p2 is the electron configuration for: A. Carbon B. Calcium C. SiliconC
  51. 51How many valence electrons does an atom of Phosphorus have? A. 5 B. 15 C. 30.97A
  52. 52The ionic charge of a calcium ion is 2+ True Falsetrue
  53. 53The correct formula for the ionic compound of K+ and O2- A. KO B. KO2 C. K2OC
  54. 54The formula for Gold(III)Chloride is: A. AuCl B. AuCl3 C. Au3ClB
  55. 55The name for CoCl3 is: A. Cobalt Chloride(III) B. Cobalt(III) Chloride C. Cobalt ChlorideB
  56. 56The formula for Lead(II) Phosphite is: A. Pb3(PO3)2 B. Pb2(PO3)3 C. Pb2(PO4)3 D. Pb3(PO4)2A
  57. 57The name for N2 is: A. Dinitrogen B. NitrogenB
  58. 58Br2 is a molecule and a compound True Falsefalse; diatomic molecule but not compound
  59. 59Which of the following describes an organic compound? A. soluble in water B. high melting point C. low boiling pointC
  60. 60Octane has molecular formula of: A. C9H20 B. C4H10 C. C8H18C
  61. 61What is the frequency of blue light if it has a wavelength of 4.5 x 10-7m A. 6.7 x 10 14 B. 3.0 x 10 8 C. 135A
  62. 62An atom of Al is smaller than an atom of Cl True Falsefalse
  63. 63Methane consists of: A. one carbon and four hydrogens B. one carbon and three hydrogens C. one carbon and two hydrogens D. two carbons and four hydrogensA
  64. 64bromine and chlorine will form an ionic compound True Falsefalse
  65. 65Electrons drop to a lower energy level when they emit a photon True Falsetrue
  66. 66The symbol of the ion with 17 protons and 18 electrons is Cl - True Falsetrue
  67. 67The number of orbitals in n = 1 principle energy level is: A. 1 B. 2 C. 3A
  68. 68Electrons drop to a lower energy level when they absorb a photon True Falsefalse
  69. 69The formula for sodium oxide is NaO2 True Falsefalse
  70. 70An atom of Br has larger ionization energy than an atom of Ca True Falsetrue
  71. 71The electron configuration: [Xe]6s25d104f14 is: A. Bi B. Cd C. HgC
  72. 72The number of orbitals is a 4d sublevel is: A. 3 B. 5 C. 7B
  73. 73Organic compunds normally have low boiling points True Falsetrue
  74. 74The number of electrons lost by Ca, to acquire a noble gas electron arrangement is: A. 20 B. 2 C. 18B

Information

Description
Flashcards on Exam 1 Chem , created by Agasana Viengmany on 22/08/2018.
Views
0
Rating

Feedback

What is it about?

What do you think of the new look?

How do you like it?