Exam I Review

Temperature Conversions and Scientific Notation

100

Express the number 0.004231 in scientific notation.

What is 4.231 x 10^-3

200

Express the number 34.5 in scientific notation.

3.45 x 10^1

300

Liquid nitrogen boils at -195.8°C. Express the boiling point of liquid nitrogen in K.

What is 77 K?

400

Many home freezers maintain a temperature of 0°F. Express this temperature in °C.

What is -18 degrees C

500

Lead melts at 601.0°C. What temperature is this in °F?

What is 1,114 degrees F

Dimensional Analysis and Sig Figs

100

How many Liters is 750 milliliters?

What is 0.75 L

200

In 1828, the diameter of the U.S. dime was changed to approximately 18 mm. What is this diameter when expressed in nanometers?

What is 1.8 x 10^9 nm

300

The number 2.0320 x 10^9 has how many significant figures?

What is 5

400

How many significant figures are there in 0.004020?

What is 4

500

Give the correct number of significant figures to the problem below.

6.2 × 10^-13 × 5.68 × 10^8 =

What is 3.5 x 10^-4

History of Atomic Theory

100

Who discovered the electron by conducting a cathode ray tube experiment?

Who is J.J Thompson 

200

When J. J. Thomson discovered the electron, what physical property of the electron did he measure?

What is its charge-to-mass ratio

300

Who discovered the nucleus of the atom using a gold foil experiment?

Who is Ernest Rutherford

400

Which of the following scientists developed the nuclear model of the atom?

Who is Ernest Rutherford

500

Rutherford's experiment with alpha particle scattering by gold foil established that

protons are not evenly distributed throughout an atom

atom is mainly empty space

Molecular and Empirical Formulas and Chemical Nomenclature

100

The molecular formula for glucose is C₆H₁₂O₆. What is the empirical formula?

What is CH₂O

200

Hydrogen peroxide has a molecular formula H₂O_2. What is the Empirical formula?

What is HO?

300

What are the two different ions present in the compound FeCl3?

What are Fe 3+ and Cl^-

400

What is the ion ClO4^- named?

What is perchlorate ion

500

What is the formula for the ionic compound containing iron(III) ions and iodide ions?

What is FeI₃

Chemical Nomenclature

100

What is the formula for hydroiodic acid?

what is HI

200

The formula for sodium sulfide is 

What is Na₂S

300

The name for NH₄NO₃ is

What is ammonium nitrate.

400

The name for CuSO₄·5H₂O is

What is copper(II) sulfate pentahydrate.

500

What type of compound is IF5?

A) Ionic

B) Molecular

C) Acid

D) Base

E) Hydrate

What is B