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Chemistry Quiz 3 (60 MCQs)

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1. A combination of two or more substances in which the substances retain their distinct identities.
2. What is the definition of a compound?
3. Cm3 of nitric acid completely neutralises 50 cm3 of 0.25 mol dm-3 calcium hydroxide. Calculate the molarity of the nitric acid.
4. The process of separating substances in a mixture by evaporating a liquid and condensing a vapor
5. All sides are equal, only two angles are equal (~90$^ \circ$)
6. Determine whether each material below is a pure substance-element, pure substance-compound, a homogeneous mixture, or a heterogeneous mixture.C 2H 2
7. A mixture that contains small, undissolved particles that do not fully dissolve is called a
8. The ability to transfer heat and electricity refers to .....
9. A solution has a pHof 3. What type of solution is this?
10. How many bonds does Carbon need to become stable?
11. Which of the following IS a mixture?
12. The amount of space an object takes up or the amount of space something contains
13. A chemical equation should be balanced to:
14. If two covalently bonded atoms are identical, the bond is
15. What is the correct name of the compound CaCl2?
16. If an element is dull, brittle, and a good insulator, you would be looking for a .....
17. Which physical property is the amount of space something takes up and can be measured with a graduated cylinder?
18. What is the geometry of BCl3?
19. The Maillard Reaction requires natural sugars and another molecule found in protein. What is the other molecule?
20. Which branch of chemistry that would include analyzing the how a medicine reacts in the body.
21. Energy required to remove the 1st electron from an atom.
22. Equal sides and equal angles (90$^ \circ$)
23. When writing chemical formulas, the ..... is always written first.
24. What is the volume of distilled water added to 50.0 cm3 of 1.0 mol dm-3 ethanoic acid in order to dilute it to 0.2 mol dm-3 ethanoic acid?
25. The Law of conservation of mass means that if there are 2 atoms of hydrogen on the product side, there must be ..... atoms of hydrogen on the reactant side.
26. A solid substance that forms when 2 liquid solutions are combined?
27. What is it called when particles in a solid or liquid move slower and closer together?
28. What environmental element assists rusting?
29. Which aspect of a chemical reaction is affected by enzymes?
30. If the density of a solution is 4.5g/mL, the mass of 1.4mL solution in significant figure is
31. Animal cells have four main molecules that keep the body healthy. What type of molecule in animal cells provides a "map" for making proteins?
32. What are Physical Changes?
33. Calcium + zinc nitrate goes to
34. Which of the following is a possible compound formed from Ca2+ and NO3-1?
35. ..... is the branch of chemistry that would measure the energy changes in chemical reactions.
36. Which is a physical change?
37. A mixture in which two or more substances are evenly mixed but not bonded together
38. What are chemical reactions that absorb energy?
39. The atomic number of an elements is the total number of which particles in the nucleus?
40. What is the mass of a proton and a neutron?
41. The branch of chemistry that uses mathematics and computers to design and predict the properties of new compounds.
42. Achemical equation shows how the combination of elementsand compounds can create different products. According to the law of conservation of matter, which of the followingis true?
43. Which of the following branches of chemistry involves the study of effects of harmful gases on the atmosphere?
44. Which compound would decolourize bromine water in the dark?
45. Does the temperature of water affect the time it takes a sugar cube to dissolve? What is the IV (independent variable) in this experiment?
46. Glucose, fructose, and galactose are all examples of a
47. What is the formula for potassium fluoride?
48. The branch of analytical chemistry that answers the question what is present?
49. Subscripts tell how many ..... of each element are in the compound.
50. Meaning of Matter
51. A chemical reaction that absorbs energy in the form of heat is described as:
52. What effect of optical isomers on plane-polarized light can be measured using a polarimeter?
53. Table salt is an example of a .....
54. What two types of atoms make a covalent bond?
55. Which of the following gives an accurate definition for a weak acid?
56. Which science examines the structure of living organisms at the atomic level?
57. The Kinetic Theory describes the ..... of particles in all matter.
58. Three types of chemical reactions are synthesis, ....., and replacement.
59. What type of bond occurs between two different molecules due to polarity?
60. Which of the following is an ionic compound?
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