- 1. two or more substances combine to form one new substance.
A) single replacement reaction
B) Combination reaction
C) Decomposition reaction
- 2. A single substance breaks down into two or more simple substances.
A) Single replacement reaction
B) Synthesis reaction
C) Decomposition reaction
- 3. Is one in which an element replaces another in a compound.
A) Synthesis reaction
B) Double replacement reaction
C) Single replacement reaction
- 4. Positive and negative portions of two compounds are interchanged.
A) Synthesis reaction
B) Single replacement reaction
C) Double replacement reaction
- 5. What is the general formula of synthesis reaction?
A) AB=A+B
B) A+BC=B+AC
C) A+B=AB
- 6. What is the general formula of decomposition?
A) A+B=AB
B) A+BC=B+AC
C) AB=A+B
- 7. What is the general formula of single replacement?
A) AB+CD =AD+BC
B) A+BC=B+AC
- 8. What is the general formula of double replacement ?
A) AB+CD =AD+BC
B) A+B=AB
- 9. assures that the law of conservation of mass is obeyed - the total mass of reactants must equal the total mass of product.
A) Conservation of mas
B) Balancing chemical equation
C) None of these
A) 2H²+O²=2H²O
B) 2H+O=2H2O
A) 2Xe+3F²=XeF⁶
B) Xe+3F²=XeF⁶
C) Xe+3F²=XeF⁶
A) N²+3H²=2NH³
B) 2NH³2N²+3H²=2NH³
C) N²+3H²=2NH³
- 13. a state of matter in which separate atoms or subatomic particles cooled to near absolute zero
A) Solid
B) Plasama
C) BEC
- 14. is a measure of the quantity of a matter that an object contains
A) Matter
B) Solid
C) Mass
- 15. is anything that occupies space and has mass or weight.
A) Mater
B) Matter
C) Mass
- 16. How many orbitals are there in the d sub shell?
A) 4
B) 7
C) 5
- 17. The principle energy levels contain ____ designated by the letters (s,p,d,f)
A) Hund's rule
B) Sub shell
C) Priciple energy level
- 18. This principle of electron filling the orbital in order of increasing energy.
A) aufbau priciple
B) hund's rule
C) Paul's excursion priciple
- 19. ____ is the first elements in the periodic table and the most abundant in the universe.
A) Hydrogen
B) Helium
C) Oxygen
- 20. How many electrons in the outermost energy level do we have in boron family?
A) 3
B) 4
C) 5
- 21. How many electrons in the outermost energy level do we have in halogens?
A) 5
B) 7
C) 6
- 22. It is the process of separating the insoluble solid from the liquid substance by allowing the liquid to pass through some porous materials.
A) Filtration
B) Distillation
C) Filtrate
- 23. Alcohol dissolved in water
A) Solid in liquid
B) Liquid in liquid
C) Gas in liquid
- 24. Ionic compounds are soluble in polar solvents and covalent compounds are soluble in non polar solvents.
A) Temperature
B) Properties of solute and solvent
C) Pressure
- 25. Solutions that contain only liquids and solids are not appreciably affected by changes in pressure, but for gases there is an appreciable effect.
A) Pressure
B) Solute
C) Temperature
- 26. A rising temperature produces a wide range of effects upon the solubilities of solid in liquid.
A) Temperature
B) Pressure
C) Solubility
- 27. The weight of a substance dissolved by a given weight or volume of solvent as a given temperature.
A) Solvent
B) Solution
C) Solubility
- 28. Solubility is a homogeneous mixture of atoms,ions, or molecules of two or more substances.
A) False
B) Yes
C) True
- 29. Is good for separating mixtures of dissolved substances that have different colors, such as inks and plant dyes.
A) Sublimation
B) Flotation
C) Chromatography
- 30. It is the process of agitating a mixture by bubbling air into it to allow small particles to float.
A) Flotation
B) Floatation
C) Sublimation
- 31. Magnetic separation is the attraction of elemental metals from impurities by passing through magnet. Is the statement True or False.
A) True
B) Yes
C) False
- 32. This type of distillation is carried out at a temperature lower than boiling point as a result of reduction of pressure in a systme.
vacuum distillation
vacum distillation
fractional distillation
A) Vacuum distillation
B) Vacum distillation
C) Fractional distillation
- 33. Solutions that is more concentrated than a saturated solution.
A) Saturated solution
B) Unsaturated solution
C) Supersaturation solution
- 34. It is a solution which contains less amount of solute than is required to saturate it at that temperature.
A) Unsaturated solution
B) Unsaturated solution
C) Supersaturation solution
- 35. A solution contains a relatively large amount of dissolved solute.
A) Dilute solution
B) Concentration solution
C) Saturated solution
- 36. A successive distillation that is carried out in an automatic way without collecting or transferring the intermediate fractions.
A) Vacuum distillation
B) Simple distillation
C) Fractional distillation
- 37. Filtrate is the process of separating the insoluble solid from the liquid substance by allowing the liquid to pass through some porous materials. Is the statement True or False.
A) Yes
B) True
C) False
D) False
- 38. The organic compound purified and distill with water
A) Steam distillation
B) Simple distillation
C) Fractional distillation
- 39. Dilute solution is a solution that contains a relatively small amount of dissolved solute. Is the statement True or False.
A) True
B) Yes
C) No
D) False
- 40. Sublimation is the process of changing liquid to gaseous state without passing through the liquid state. Is the statement True or False.
A) True
B) No
C) Yes
D) False
- 41. The only fraction left in the flask
residue
A) Distillate
B) Distilled
- 42. The liquid being distilled
A) Distillate
B) Distilland
C) Residue
- 43. Vitamin C is an inorganic compound. Is the statement True or False.
A) True
B) No
C) Yes
D) False
- 44. DNA is an inorganic compound. Is the statement True or False.
A) False
B) No
C) Yes
D) True
- 45. What do you call the another name of Vitamin C?
A) Amino acid
B) Ascorbic acid
C) Nucleic acid
- 46. Carbohydrates are sugar molecules that act as the body's main source of energy. Is the statement True or False.
A) False
B) True
C) Yes
D) No
- 47. Lipids are fatty compounds that perform a viriety of functions in your body. Is the statement True or False.
A) False
B) Yes
C) True
D) No
- 48. Proteins are essential macronutrients made of amino acids that form the building blocks of life. Is the statement True or False.
A) No
B) Yes
C) False
D) True
- 49. Nucleic acid are large essential biomolecules that store,transmit and express genetic information in all living organisms and viruses. Is the statement True or False.
A) False
B) No
C) Yes
D) True
- 50. Water is an organic compound. Is the statement True or False.
A) False
B) True
C) Yes
D) No
- 51. Carbon dioxide is an organic chemistry. Is the statement True or False
A) Yes
B) False
C) True
D) No
- 52. How many main types or classes of organic compounds found in all living things?
A) 6
B) 4
C) 5
- 53. Which of the following are careers using organic chemistry?
A) All of these
B) Chemical engineers
C) Chemists dentist
- 54. The following are examples of organic compound EXCEPT
A) Diamond
B) Vitamin C
C) DNA
- 55. Is the study of the structure, properties, composition, reactions and preparations of carbon-containing compounds
A) Physical chemistry
B) Biochemistry
C) Organic chemistry
- 56. A theory known as "_____" stated that a "vital force" force from living organisms was necessary to make an organic compound.
A) Vitalism
B) Vitalism
C) Force
D) Vital force
- 57. What are the 4 main types of organic compounds found in all living things?
A) Carbohydrates,lipids, proteins, nucleic acid
B) Polymers, lipids, proteins, nucleic acid carbon
C) Hydrogen, nucleic acids, lipids
- 58. Who is the father of organic chemistry?
A) Freedrich wohhler
B) Freidrich wohler
C) Friedrich wohler
- 59. The name organic chemistry came from the word_____
A) Vitalism
B) Organism
C) Vital force
- 60. A substance that is dissolved
solute
solvent
solutions
Is a dissolving agent and is usually makes up a greater proportion of the solution
A) Solvent
B) Solute
C) Solution
D) Solution
- 61. A substance that is dissolved
A) Solutions
B) Solute
C) Solvent
- 62. A process wherein liquid substance turns into gaseous form
A) Evaporation
B) Flotation
C) Sublimation
- 63. It is a solution that can hold no more of the solute at a particular temperature
A) Unsaturated solution
B) Saturated solution
C) Supersaturation solution
A) Soluble
B) Partially soluble
C) Insoluble
- 65. Sugar dissolved in water
A) Liquid in liquid
B) Solid in liquid
C) Gas in liquid
A) Centrifuge
B) Centrifugation
C) Centrifugate
- 67. a motor driven apparatus
A) Centrifugate
B) Centrifugation
C) Centrifuge
- 68. what is the ancient name of gold
A) Aurum
B) Cuprum
C) Ferum
- 69. This is a process that involve evaporation and condensation of volatile liquid
A) Filtration
B) Distillation
C) Decantation
- 70. The solid particle which are retained in the filter paper
A) Filtrate
B) Residue
C) Filtration
- 71. The clear liquid which passes through
A) Residue
B) Filtrate
C) Filtration
- 72. it is a process of pouring liquid leaving the solid behind
A) Decantation
B) Filtration
C) Distillation
- 73. Reactants is the substances that produced in the reactions. Is the statement True or False.
A) True
B) False
C) No
D) Yes
- 74. Products is the starting materials in a chemical reaction. Is the statement True or False.
A) False
B) No
C) Yes
D) True
A) Combination reaction
B) Single reaction
C) Decomposition reaction
A) None of these
B) Combination reaction
C) Decomposition reaction
A) Single replacement reaction
B) Combination reaction
C) Decomposition reaction
A) Combination reaction
B) Single replacement reaction
C) Decomposition reaction
- 79. Positive and negative portions of two compounds are interchanged in a double replacement reaction. Is the statement is True or False
A) Yes
B) No
C) False
D) True
- 80. A single replacement reaction is one in which an element replaces another in a compound. Is the statement True or false.
A) False
B) True
C) No
D) Yes
- 81. In a decomposition reaction,a single substance breaks down into two or more simple substances. Is the statement True or False.
TRUE
FALSE
yes
A) False
B) True
C) Yes
D) No
- 82. In a decomposition reaction,a single substance breaks down into two or more simple substances. Is the statement True or False.
A) No
B) True
C) False
D) Yes
- 83. HNO3+Ca(OH)_2=Ca(NO3)_2+H2O
A) Single replacement reaction
B) Double replacement reaction
C) Decomposition reaction
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