Chem 110 Jeopardy

General Knowledge

100

Define physical and chemical properties. Examples?

Physical - characteristics that do not change the identity of the substance (color, shape, density, mp/bp)

Chemical - ability of a substance (flammability, acidity, reactivity) 

200

Exact vs Measured numbers

Exact- counting #s

Measured- length, mass, volume, use of ruler

300

What is the ion for Be?

Be⁺²

400

Define an isotope and how can we solve it like on the worksheet?

Check percentages add up to 100%, calculate isotope contribution to mass, XXXX

500

Define Alpha, Beta, Gamma decay

Alpha - ⁴₂He, protons and neutrons decrease by 2, mass # decreases by 4

Beta - ⁰₁e positron, add proton, mass # is same

Gamma - no change

Sig Figs/Scientific Notation

100

What the rules for sig figs are and why do we use them?

Addition/Subtraction: smallest decimal place

Multiplication/Division: least # of sig figs

Used to measure precision

200

How many Sig figs is in 150.40?

5

300

Write 1390.7938 in scientific notation with 3 sig figs.

1.39 x 10³

400

Write 0.0000346821 in scientific notation with 4 sig figs

3.468 x 10^-5

500

How many sig figs are in the final answer of 0.4068+3.52 = 

3 sig figs

Unit Conversions

100

Convert 252.0oz to L

177.441

200

Convert 1.7 hours to seconds, use scientific notation.

6.12 x 10³ seconds

300

Convert 2km to nm

2x10¹² nm

400

If car drives 60 miles per hour for 2 hours. How many kilometers did he drive?

193.12 KM

500

The Empire State Building is recorded to be 1,454 ft. How many "Toyota Corolla" tall is the building? Note: One Toyota Corolla is 147.5 cm?

7.037 x 10³ Toyota Corollas Tall

Periodic Table

100

How do we calculate # of protons? Neutrons? Electrons?

Protons/Electrons are the same as the atomic number (cancel out).

Electrons = Mass # - Atomic #

200

What element is in group 5 period 4?

As

300

What is the Atomic #, AMU, # protons/electrons/neutrons in Br?

#35, AMU= 79.904, 35 protons, 35 electrons, 44.904 neutrons

400

Write the electron orbital diagram for O (oxygen)

6 valence electrons

500

What is the full electron configuration of Br? Abbreviated?

1s²2s²2p⁶3s²3p⁶4s²3d¹⁰4p⁵

[Ar] 3d¹⁰4s²4p⁵

Calculations

100

Calculate 5.100 + 4.849, include sig figs 

9.949

200

(4.32+790) x (56.000+1.0) in scientific notation4.

4.5x10⁴

300

A doctor orders 4.0 mg of morphine. The vial of morphine on hand is 38 mg/mL. How many L should you administer to the patient? with sig figs

0.0095 L

400

If the brass is 46% zinc by mass and 54% copper, if there is a block that weighs 340 kg, what is the mass of zinc and copper in lbs? Include Sig Figs.

Zinc: 340 lbs

Copper: 400 lbs

500

A liquid allergy medication contains 18 mg of Cetirizine per 10 milliliters of solution. The recommended dosage is a maximum of 2.5 mg per kilogram of body weight per day. If a child weighs 25 pounds, how many liters of the allergy medication can the child take in one day?

15.75 mL, 0.01575 L