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Formulas and Equations TEST Do not write on test please.
Formulas Learn to properly apply the rules of chemical nomenclature for naming chemicals.
1. What is the non metallic anion ion in ammonium chloride?
a. NH4 1 +
c. NH2 +
2
b. Cl –
d. Cl–
Use the table below to answer question 2. Comparison of Two Bond Types
Bond Type X
Bond Type Y
makes water based compounds
makes oil based molecules
transfers, gives/takes electrons polarity
shares electrons resulting non polarity
made with metals and nonmetals
made of nonmetals
Dissolves in water
Dissolves in oil
examples: NaCl, CaCl2
examples: CO2, NH3, CH4
2. Which of these correctly identifies the bond types?
A X is ionic. Y is hydrogen.
B X is molecular. Y is ionic.
C X is hydrogen. Y is covalent.
D X is ionic. Y is molecular.
3. Which of the following pairs of atoms is least likely to
form a compound?
A.
B.
C.
D.
Potassium and Iodine
Calcium and Chlorine
Iron and Oxygen
Nitrogen and Argon
4. Phospholipids are molecules found in the human
body. The bonds between them are considered
A.
B.
C.
D.
nuclear.
metallic.
ionic.
molecular
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5. Which of the following statements are NOT true?
a) The formula of hydrochloric acid is HCl.
b) The formula of dinitrogen trioxide is N2O3.
c) The formula of ammonium chloride is HClO.
d) The formula of phosphoric acid is H3PO4.
6. Aluminum unites with a second element, which we will represent by the symbol E, to form a definite
compound whose formula is Al2E3. Element E is most probably
a. an actinide element
b. an alkaline metal
c. an oxygen family
d. a halogen
7. Identify the substance below, which is SOLUBLE in water. Remember ionic substances are soluble in water.
Circle all that apply.
A. MgSO4
B. SiO2
C. NO2
D. BaCl2
8. The compound Ag2S in soluble in water and because of that is used photographic film processing. The Silver
bonds to the film to form an image. What is its chemical name?
a. silver bisulfite
b. silver sulfite
c. silver oxosulfate(IV)
d. silver sulfide
9. Which one of the following formulas is incorrect because it does not
represent a known ionic compound with a net change of zero?
a. MgCl2
b. Al F3
c. Na O
d. RbBr
10.
a.
b.
c.
d.
How many tin, carbon and oxygen atoms are there in 3SnCO ?
3
Sn=
Sn=
Sn=
Sn=
2 C= 1 O= 3
6 C=3 O=9
3 C= 3 O= 9
6 C = 9 O = 27
11. Calculate the formula mass of Ba(OH)
a. 155.35g
b. 170.34g
c. 171.35g
d. 308.68g
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12. The mass of one mole of SiF4 is:
a. 47 g
b. 52 g
c. 104 g
d.155 g
13. The formula mass of hydrogen carbonate would be:
a. 50 g/mole
b. 52 g/mole
c. 60 g/mole
d. 62 g/mole
14. The formula for carbon dioxide, CO2, can represent
a. one molecule of carbon dioxide.
b. one molar mass of carbon dioxide.
c. 1 mole of carbon dioxide molecules.
d. all of the above.
15. The active ingredient in toothpaste is Sodium fluoride (0.24%)?
a. NaF
c. Na2 F
b. SoF2
d. So2 F3
16. Which of the following best describes the relationship between the atoms described below?
Atom 1 – 15E 15P
Atom 2 – 16 E 15P
A. They are both phosphorous anions.
B. They are both radioactive.
C. One is phosphorous and the other is its anion.
D. They contain 31 and 32 protons respectively.
E. They are both phosphorous cations.
17. Sodium ascorbate, a water-soluble salt, contains ascorbic acid or vitamin C combined with
sodium. As a nutritional supplement, sodium ascorbate provides a less acidic alternative to the
more common ascorbic acid. (Vitamin C) , what is the formula?
a. Na C2H3O2
b. NaC6H7O6
c. C6H7O6
d. NaCO3
18. Epsom salt is sometimes used as a bath to draw out toxins or even as a facial scrub. What is the formula
mass of 1 mole of Magnesium sulfate?
a. 144.5 g
b. 120 g
c. 152 g
d. 136 g
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19. Looking at the diagram of glucose, which element could X be?
A.
B.
C.
D.
Xenon
Carbon
Chlorine
Gold
20. Which of the following diagram belongs to magnesium chloride?
Proceed to the next section
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Equations Learn to classify equations and apply the law of conservation during a chemical change.
1.
Which of the following is a balanced chemical equation?
a. H2O2 → H2O + O2
b. 2 Fe2O3 + 3 S → 4Fe + 3SO2
c. SO2 + O2 + 2H2O → 4H2SO4
d. 2 Ba + HCl → BaCl2 + H2
2. What are the reactants in the following chemical equation:
Fe + CuSO4 -----> ZnSO4 + Fe
a. iron and copper sulfate
b. iron II sulfate and copper
c. zinc and copper (II) sulfate
d. only zinc
3. What are the products in the above equation?
a. zinc and copper
c. iron and copper (II) sulfate
b. zinc sulfate and iron
d. only iron
4 – 8 Use the following choices to identify the type of reaction?
a. single replacement
b. double replacement
c. decomposition
d. synthesis
e. combustion
4.
5.
6.
7.
8.
9 – 12 Balance the following re actions by choosing the correct coefficients.
a. 1, 3, 2, 3
b. 2, 2, 2, 1,
c. 1 ,2 2, 2
d. 2, 7, 4, 6
9.
10.
11.
12.
13. How many moles of Potassium are needed to react with water when it produces Potassium Hydroxide
and Hydrogen gas?
a. 1
b. 2
c. 3
4. 4
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14. Lead (III) chloride reacts with calcium hydroxide to form calcium chloride and lead (III) hydroxide.
What are the coefficients for this reaction?
a) 3, 2, 2, 3
b) 2, 3, 2, 3
c) 2, 3, 3, 2
d) none of these
15. What are the products of I2 + FeCl3 →
a.
b.
c.
d.
ClI3 + Fe
FeI3 + Cl2
FeI2 + Cl3
No reaction
16. The word equation “magnesium reacts with chlorine to produce magnesium chloride” would be
represented by which of the following formula equations?
a. Mg → Mg2 +MgCl2
b. MgCl2→ Μg+ Cl2
c. MgCl2 +Mg →Χλ2
d. Mg + Cl2 →ΜgCl2
17. Copper (II) hydroxide and potassium sulfate are produced when potassium hydroxide reacts with
copper (II) sulfate. Write the balanced equation on your answer sheet.
18. What is the molar mass of iron (III) hydroxide?
a) 73 grams/mol
b) 90 grams/mol
c) 107 grams/mol
d) none of these
19 How many grams are there in 2.1 moles of sodium?
a) 48.3 grams
b) 0.0913 grams
c)11.0 grams
d) none of these is correct
20. A sample of copper weighing 6.93 g contains how many moles of copper atoms?
a. 9.17 mol
b. 0.917 mol
c. 0.109 mol
d. 0.0645 mol
e. 1.09 mol
f. 6.56 x 1022 mol
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