Antacids /Unit 2a /Practice TestPage 1 of 4

Section 2.1

Antacids /Unit 2a /Practice TestPage 1 of 4

  1. An example of a homogeneous mixture is
  1. soil
  2. sugar
  3. an acid solution
  4. gold
  1. Which statement most accurately describes differences between a homogeneous solution and a heterogeneous mixture?
  1. Homogeneous means you will have equal numbers of each type of particle, heterogeneous has different numbers
  2. Homogeneous means the particles are evenly mixed and will never settle, heterogeneous has visible differences and are not evenly spread out
  3. Homogeneous means the particles are chemically bonded together, heterogeneous means they are not bonded together
  4. Homogeneous means they particles are all the same, heterogeneous means there are different types of particles.
  1. Which species represents a chemical compound?
  1. N2
  2. NH4+
  3. CO
  4. NaHCO3
  1. Which type of matter is composed of two or more different substancesthat will never separate or settle out upon standing?
  1. an element
  2. a compound
  3. a homogeneous mixture
  4. a heterogeneous mixture
  1. Which of these terms refers to matter that is made of only one type of atom?
  1. element
  2. mixture
  3. compound
  4. solution
  1. Formaldehyde is made up of 40.% carbon, 7% hydrogen and 53% oxygen bound together. The percentages and structure never vary. Formaldehyde is classified as
  1. a compound
  2. an element
  3. a mixture
  4. a colloid
  1. Which substance is a mixture?
  1. air
  2. carbon dioxide
  3. zinc sulfate
  4. bromine

  1. Given the diagrams X, Y, and Z below:

Which diagram or diagrams represent a compound of elements A andB?

  1. X, only
  2. Z, only
  3. X and Y
  4. X and Z
  1. Buckminsterfullerene, “buckyball” is composed of 60 carbon atoms bonded together to make a cage like spheroid structure. It contains no other types of atoms. Buckminsterfullerene is classified as
  1. an alloy
  2. a compound
  3. an element
  4. a mixture
  1. Which particle diagram represents a sample of a mixture of two different compounds?

A.C.

B. / D.

Antacids /Unit 2a /Practice TestPage 1 of 4

Section 2.2

Antacids /Unit 2a /Practice TestPage 1 of 4

  1. The name of the compound NaNO2 is sodium ______
  1. nitrite
  2. nitride
  3. nitrate
  4. nitroxide
  1. What is the correct name for the compound Fe2O3
  1. iron oxide
  2. iron (I) oxide
  3. iron (II) oxide
  4. iron (III) oxide
  1. What is the name for the compound AlPO4?
  1. aluminum phosphide
  2. aluminum (III) phosphide
  3. aluminum phosphate
  4. aluminum (III) phosphate
  1. A compound is made up of copper and sulfur, only. The ratio of copper ions to sulfide ions is 2:1 in this compound. The name for this compound is
  1. copper sulfide
  2. dicopper sulfide
  3. copper (I) sufide
  4. copper (II) sufide
  1. What is the name for As2F6?
  1. arsenic fluoride
  2. arsenic hexafluoride
  3. diarsenic fluoride
  4. diarsenic hexafluoride
  1. What is the charge of the cation in NiSO4?
  1. +2
  2. +1
  3. +8
  4. +4

  1. What is the name for Sn(NO3)2?
  1. tin nitride
  2. tin(II) nitride
  3. tin nitrate
  4. tin (II) nitrate
  1. What is the name for the neutral compoundNO2
  1. nitrite
  2. nitrate
  3. nitrogen oxide
  4. nitrogen dioxide
  1. What is the name for OF2?
  1. oxyfluoride
  2. oxygen difluoride
  3. monoxygendifluoride
  4. oxygen fluoride
  1. What is the name of the compound with a formula of CsHCO3?
  1. carbonsulfidehydroxycobonoxide
  2. cesium hydrogen carbon trioxide
  3. cesium carbohydrate
  4. cesium hydrogen carbonate

Antacids /Unit 2a /Practice TestPage 1 of 4

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Section 2.3

Antacids /Unit 2a /Practice TestPage 1 of 4

  1. Which formula represents the compound silicon dioxide?
  1. SiO
  2. Si2O3
  3. Si2O
  4. SiO2
  1. The formula for potassium chlorate is
  1. KCl
  2. KClO3
  3. PCl
  4. PClO3
  1. What is the correct charge on the cobalt ion for cobalt (II) chloride?
  1. +3
  2. +2
  3. -3
  4. -2
  1. What is the correct formula for barium sulfite?
  1. Ba2SO3
  2. Ba2(SO3)2
  3. Ba(SO3)2
  4. BaSO3
  1. The correct formula for sulfur trioxide is
  1. S3O
  2. SO3
  3. S3O3
  4. SO

  1. In which compound is the ratio of metal ions to nonmetal ions 3 to 2?
  1. aluminum nitride
  2. aluminum chloride
  3. magnesium nitride
  4. magnesium chloride
  1. What is the formula for lead (IV) sulfate
  1. LSO4
  2. L(SO4)2
  3. Pb4SO4
  4. Pb(SO4)2
  1. Which formula represents sodium oxide?
  1. SO2
  2. S2O
  3. NaO2
  4. Na2O
  1. Which formula represents carbon tetraiodide
  1. CI5
  2. C5I
  3. CI4
  4. C4I
  1. What is the formula for tetrasulfurtetranitride?
  1. N4S4
  2. NS
  3. SN
  4. S4N4

Antacids Part A/Unit 2a TestPage 1 of 4

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Free Response

Jill was handed an assortment of index cards. Each index card has the chemical symbol for an ion on it.

Ca 2+ S2- I1- Co2+ Ag1+ CO32-Fe3+

  1. Jill formed ionic compounds using the index cards. She combined iodine and sulfur to form the compound IS2. Is this a possible ionic compound? Explain why or why not.
  1. Jill then wrote the formulas for all the possible compounds that the calcium ion can form with the other “6” ions in the above list. What are the correct formulasthat she wrote down? Note: Not all combinations are possible compounds
  1. Down below, Jill wrote some additional chemical formulas that don’t have to do with the index cards. Identify whether each formula is correct or incorrect. If the formula is incorrect, change it to make it correct.
  2. CoS2 Na2CO1 3. Fe3S2

Answers

  1. C
  2. B
  3. C
  4. C
  5. A
  6. C
  7. A
  8. A
  9. C
  10. C
  11. A
  12. D
  13. C
  14. C
  15. D
  16. A
  17. C
  18. D
  19. B
  20. D
  21. D
  22. B
  23. B
  24. D
  25. B
  26. C
  27. D
  28. D
  29. C
  30. D

Free Response:

  1. No, an ionic compound is composed of a metal(cation) and a nonmetal(anion).
  2. CaS; CaI2; CaCO3
  3. A. correct B. incorrect, Na2CO3 C. incorrect Fe2S3