Review Game 12/23

Review Game 12/23

It's almost time for vacation!

Atomic Structure Review

You will need a periodic table and a calculator.

Multiple Choice

Which is an alkali metal?

• Magnesium
• Iron
• Sodium
• Europium

Multiple Choice

Which is a halogen?

• Helium
• Chlorine
• Oxygen
• Neptune

Multiple Select

What subatomic particles make up the nucleus of an atom?

• electrons

• protons

• neutrons

• leptons

• mesons

Multiple Choice

Which scientist is responsible for first stating that all the atoms of a particular element are identical but are different from the atoms of all other elements?

• Dalton

• Thomson

• Aristotle

• Democritus

• Proust

Multiple Choice

Which scientist discovered the electron using cathode ray tubes?

• Joseph Thomson

• John Dalton

• Ernest Rutherford

• Robert Millikan

Multiple Choice

In the gold foil experiment, most of the positively charged alpha particles passed through the gold foil, but some were deflected or bounced back.  What did we conclude because of this?  

• Atoms are small indivisible spheres
• Atoms are mostly empty space with a small, dense, positive center
• Atoms have negatively charged particles which orbit the nucleus
• Light is a wave, not a particle

Multiple Choice

24.1% of all the isotopes of a an element have a mass of 75.23 amu, 48.7% have a mass of 74.61 amu, and 27.2% have a mass of 75.20 amu.
What is the average mass of this element?

• 74.92 amu
• 24.97 amu
• 75.01 amu
• 74.51 amu

Multiple Choice

Two isotopes of carbon are carbon-12 and carbon-14.  These isotopes differ from one another by two protons.

• true
• false

Multiple Choice

How many electrons are in an atom that has an atomic number of 34, an atomic mass of 74 and a charge of -2?

• 34
• 36
• 2
• 40

Multiple Choice

If X is the symbol for an element, which of the following two symbols represent isotopes of the same element?

I. ⁷⁷₃₅X

II. ⁷⁷₃₃X

III. ⁸¹₃₇X

IV. ⁸¹₃₅ X

• I and II

• III and IV

• I and IV

• I and III

Measurements and Significant Figures

Multiple Choice

What is the measurement using the correct number of sig figs?

• 8.5mL

• 8.50mL

• 8.45mL

• 8.4mL

Multiple Choice

In division and multiplication, the answer should have the same number of significant figures as the

• number in the calculation with the fewest significant figures.

• number in the calculation with the most significant figures.

• average number of significant figures in the calculation.

• total number of significant figures in the calculation.

Multiple Choice

Calculate 12.34 + 1.234 + 0.1234 and give your answer with the appropriate number of significant figures.

• 13.6974

• 13.697

• 13.70

• 13.7

Multiple Choice

How many significant figures are reported in the following measurement?

0.002040 m

• 6

• 4

• 3

• 2

Chemical Reactions Review

Multiple Choice

Which of the following equations are correctly balanced?

• 12CO₂ +H₂O ⟶ C₆H₁₂O₆ + O₂

• CO₂ + 9H₂O ⟶ C₆H₁₂O₆ + O₂

• CO₂ + H₂O ⟶ 3C₆H₁₂O₆ + O₂

• 6CO₂ + 6H₂O ⟶ C₆H₁₂O₆ + 6O₂

Multiple Choice

What class of reaction is represented here:

Cu + 2Ag(NO₃) → 2Ag + Cu(NO₃)₂

• Synthesis Reaction

• Decomposition Reaction

• Single Displacement Reaction

• Double Displacement Reaction

Multiple Select

What type of reaction is represented here?

2Na +Cl₂→2NaCl

Select all that apply:

• Synthesis Reaction

• Decomposition Reaction

• Single Displacement Reaction

• Double Displacement Reaction

• Redox

Multiple Choice

What is the general pattern for a decomposition reaction?

• A + B ⟶ AB

• AB ⟶ A + B

• A + CD ⟶ C + AD

• AB + CD⟶ CB + AD

Multiple Choice

What class of reaction has the following general patten:
 $C_xH_y\ +\ O_2\ \ ⟶\ CO_{2\ }+\ H_2O$  

• Synthesis

• Decomposition

• Single Replacement

• Double Displacement

• Combustion

Multiple Choice

What class of reaction has the following pattern:

A + CD ⟶ C + AD

• Synthesis

• Decomposition

• Single Replacement

• Double Replacement

• Combustion

Multiple Choice

Which of the following correctly balances the equation shown below:

___P₄ + ___O₂ ⟶ ___P₂O₃

• 3 P₄+ O₂ ⟶ 2 P₂O₃

• P₄+ O₂ ⟶ 2 P₂O₃

• P₄+ 3 O₂ ⟶ 2 P₂O₃

• P₄+ 2 O₂ ⟶ 3 P₂O₃

Multiple Choice

Which of the following is correctly balanced for the following reaction:

Barium sulfide and platinum (II) fluoride will react to yield barium fluoride and platinum (II) sulfide

• BaS + PtF₂ ⟶ BaF₂ + PtS

• 4 BaS + 2 PtF₂ ⟶ BaF₂ + PtS

• BaSO₃ + 2 PtFl₂ ⟶ 2 BaFl₂ + 2 PtSO₃

• BaS + Pt₂F ⟶ BaF₂ + PtS₂

Mole Calculations

You will need a calculator and a periodic table.

Multiple Choice

What is the molecular formula if the empirical formula is C₂H₅ and the molecular molar mass is 58.14 g/mol?

• C₂H₅

• C₄H₁₀

• C₁H_2.5

• C₄H₈

Multiple Choice

Which pair has the same empirical formula?

• NaCrO₄ and Na₂Cr₂O₇
• C₂H₄O₂ and C₆H₁₂O₆
• C₃H₆O₃ and C₂H₆O₂
• CH₄ and C₂H₆

Multiple Choice

Calculate the % composition by mass of oxygen present in H₂SO₄.

• 16.3%
• 65.25%
• 32.6%
• 57.14%

Multiple Choice

You are given the following percentages composition by mass:

40.05% S and 59.95% O.

Determine the empirical formula for the compound.

• SO

• SO_2

• SO_3

• SO₄

Multiple Choice

How many molecules are present in 135 g of teflon, which has the formula C₂F₄?

• 6.13 x 10²³ molecules

• 5.13 x 10²³ molecules

• 8.13 x 10 ²³ molecules

• 9.13 x 10²³ molecules

Multiple Choice

What is the mass of 0.75 moles of (NH₄)₃PO₄?

• 0.0044 g

• 91 g

• 110 g

• 74 g

Stoichiometry

You will need a calculator and a periodic table.

Multiple Choice

Which of the following represent a mole ratio between silver nitrate and copper(II) nitrate in the following reaction:

2AgNO₃ + Cu ⟶ Cu(NO₃)₂ + 2Ag

• 2 mol AgNO₃:2 mol Ag

• 2 mol Ag : 2 mol AgNO₃

• 2 mol AgNO₃ : 2 mol Cu(NO₃)₂

• 2 mol AgNO₃ : 1 mol Cu(NO₃)₂

Multiple Choice

2Na + 2H₂O → 2NaOH+ H₂

How many grams of hydrogen are produced if 120 g of Na react completely according to the equation shown above?

• 5.2 g

• 2.6 g

• 690 g

• 45 g

Multiple Choice

4NH₃ + 5O₂ ⟶ 4NO + 6H₂O

What is the total number of moles of H₂O produced when 12 mole of NH₃ is completely consumed?

• 15

• 18

• 20

• 24