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Chemistry Quiz 15 (60 MCQs)

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1. Branch of chemistry that is concerned with the art and science of determining what matter is and how much of it exists.
2. Form of matter that has an indefinite shape, flows, and yet has a fixed volume.
3. Substance that consists of one type of atom. It is a pure substance. Found on the Periodic Table.
4. How is a solid defined?
5. All of the following are characteristics of all living things EXCEPT
6. In baking soda (NaHCO3) the three represents a .....
7. Which of the following is an example of the law of conservation of matter?
8. In order to convert to Kelvin, you add ..... to the Celsius measurement.
9. It is one of the frontiers that the chemists are currently exploring in relation to the discovery and development of viable alternative source of power that can be utilize for the consumption of the people.
10. Substances that are formed during a chemical change are known as:
11. The family in the periodic table that contains the most reactive metals is the .....
12. A layer of white solid formed quickly when a piece of sodium is placed on a table in room condition. What is the identity of the white solid?
13. An ionic bond forms when
14. ..... is the branch of chemistry that would measure the amount of energy an atom absorbs in nuclear reaction.
15. A substance whose all the atoms have same atomic number is called .....
16. A can of Coke will sink in a bowl of water. A can of Diet Coke will float in a bowl of water. What does this tell you about the density of the Diet Coke?
17. What is the formula for the compound formed by iron (II) ions and chromate ions?
18. What is the subscript in $ 3CaCl_2$
19. What is the meaning of green technology?
20. PVC pipe is an example of which of the following?
21. A student determined the heat of fusion of water to be 88 calories per gram. If the accepted value is 80. calories per gram, what is the student's percent error?
22. Whether or not bonds form is due to the? ? ? ? ?
23. No sides and no angles are equal (~90$^ \circ$)
24. A $ free\ radical$ is .....
25. When atoms share electrons, the electrical attraction of an atom for the electrons is called the atom's
26. Chlorine gas is ..... colour
27. Which formula is correct to calculate the $ No.\ of\ moles$?
28. All of the following are general characteristics of a substance in the liquid state except
29. The metal ion which is NOT coloured is-:
30. An atom that has a positive or negative charge.
31. Particles (molecules) in a ..... have more energy than the other states of matter.
32. What type of bond is formed between atoms of different charges?
33. A chemist mixes 19 grams of copper with 102grams of silver nitrate. The total mass of the products is expected to be 121grams. Which of the following would best explain these results?
34. A mixture that contains a solvent and at least ine solute is called a
35. What gives water many properties that are important to living things?
36. A chemical property that refers whether a compound will burn when exposed to flame.
37. Which is a metalloid
38. An atom has 13 protons, 15 neutrons and ..... electrons what is its mass number?
39. An octet is equal to
40. ..... is stored energy.
41. Studying the refining process of metallic ores (rocks).
42. What type of chemical reaction is this one? Al(OH)3 $\rightarrow$ Al2O3 + H2O
43. An ..... cannot be broken down into any other substance.
44. No sides are equal and only two angles are equal to 90$^ \circ$
45. Carbon is considered an element while carbon dioxide is considered a compound. This is because carbon dioxide is-
46. Which is a homogeneous mixture?
47. An intensive property that refers to the perception of the different wavelengths of light.
48. Changes in matter can be described in terms of physical changes and .....
49. What happens to molecules when the temperature drops or lowers?
50. Subatomic particles with no charge but was a mass equal to that of a proton.
51. Pure research can lead directly to an application but an application can exist before research is done to explain how it works.
52. Which is a metal?
53. Which of the following factors does not effect the rate of dissolving?
54. Substance with atoms that are all alike.
55. He was the Greek philosopher who thought that all matter is composed of primal element which is air.
56. He was the Greek philosopher who proposed that all matter is made up of four fundamental elements-earth, water, air, fire.
57. Which of these is an ionic bond?
58. What are the new substances that are formed in a chemical reaction called?
59. Which of the following correctly matches a compound with its molecular geometry?
60. A heterogeneous mixture consists of two or more phases.
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