Chemistry Final Exam Review

Sig Figs/Sci. Not.

100

0.02010 kg has this many significant figures.

What is 4 significant figures?

200

0.0329 in scientific notation.

What is 3.29 x 10^-2?

300

The following calculation in scientific notation and correct significant figures:  3.834 + 2.02 + 4.71630 + 238.1621 + 186.2

What is 434.9?

400

(3.2 x 10^-7) / (5.1 x 10¹⁰) in scientific notation and with correct sig. figs.

What is 6.3 x 10^-18?

500

(6.31 x 10⁴) + (7.1 x 10^-2) * (3.4 x 10^-5) in correct scientific notation.

What is 6.31 x 10⁴?

Periodic Table

100

The names of the representative elements in groups 1A, 2A, 7A, and 8A.

What are alkali metals, alkaline earth metals, halogens, and noble gases?

200

The seven diatomic elements.

What are hydrogen, bromine, oxygen, nitrogen, chlorine, iodine, fluorine.

300

Three properties of metals.

What is shiny, high electrical conductivity, and ductile/malleable?

400

Definition of an isotope.

What is two atoms with the same number of protons but different numbers of neutrons?

500

The average atomic mass of element 'X' given that it consists of the following percentages of isotopes with masses shown:  (⁶⁷X, 50.00%, 66.941amu), (⁶⁹X, 30.00%, 68.939amu), (⁷¹X, 20.00%, 70.937amu).

What is 68.30 amu?

Ion/Compound Naming

100

The chemical formula for sulfide.

What is S^2- ?

200

The chemical formula for dihydrogen phosphate.

What is H₂PO₄^- ?

300

The name for HSO₃^- .

What is hydrogen sulfite?

400

The name for Mn₂(SO₃)₃.

What is Manganese (III) sulfite?

500

The name for H₂CO₃.

What is carbonic acid?

Reaction Prediction

100

The following balanced equation:  NaClO₃ → NaCl + O₂ .

What is 2NaClO₃ → 2NaCl + 3O₂

200

The following is a ________ type of reaction.  CH₄ + 2O₂ → CO₂ + 2H₂O.

What is combustion?

300

The complete balanced formula equation for zinc + silver nitrate.

What is Zn + 2AgNO₃ → Zn(NO₃)₂ + 2Ag ?

400

The complete formula equation and word equation for the reaction of: ammonium sulfide + iron (III) nitrate.

What is ammonium sulfide + iron (III) nitrate →  ammonium nitrate + iron (III) sulfide.  3(NH₄)₂S + 2Fe(NO₃)₃ → 6NH₄NO₃ + Fe₂S₃ ?

500

The complete word equation and formula equation for the reaction of:  barium hydroxide + ammonium chloride.

What is barium hydroxide + ammonium chloride →  barium chloride + ammonium hydroxide.  Ba(OH)₂ + 2NH₄Cl → BaCl₂ + 2H₂O + 2NH₃ ?

Stoichiometry

100

The number of moles of CS₂ that form when 2.7 mol C reacts?
5C(s) + 2SO₂(g) → CS₂(l) + 4CO(g)

What is 0.54 mol CS₂?

200

The number of moles of each reactant needed to produce 3.60 x 10²g CH₃OH.
    CO(g) + 2H₂(g) → CH₃OH(g)

What are 11.3 mol CO and 22.5 mol H₂?

300

How many grams of NH₃ are required to produce 4.65g HF?
5F₂(g) + 2NH₃(g) → N₂F₄(g) + 6HF(g)

What is 1.32g NH₃?

400

The number of grams of H3PO4 that react with excess CaCO₃ to produce 3.74g Ca₃(PO4)₂.
3CaCO₃ + 2H₃PO₄ → Ca₃(PO₄)₂ + 3CO₂ + 3H₂O

What is 2.36g H₃PO₄?

500

When 15.0g Sb2S3 reacts with an excess of Fe, 9.84g Sb is produced.  This is the % yield of this rxn.
Sb₂S₃ + 3F → 2Sb + 3FeS

What is 91.1% (or 91.5% if you used                                     10.75g)?