Chemistry Chapter 2 Review

Scientific Notation

100

8.28 x 10⁰

What is 8.28?

200

1.5 x 10⁶ + 3.64 x 10⁷

What is 3.8 x 10⁷?

300

The number represented by 4.654 x 10^-3

What is 0.004654?

400

6 x 10¹² divided by 3 x 10³

What is 2 x 10⁹?

500

8.4 x 10⁷ multiplied by 3.2 x 10⁸

What is 2.7 x 10¹⁶?

Significant figures

100

How many sig figs? 0.0000504

What is 3

200

How many sig figs? 67.84930

What is 7

300

45.578 - 41.4

What is 4.1?

400

6.365 x 4.86

What is 30.93?

500

Round this number to four sig figs: 18.5675

What is 18.57?

Units of Measurement

100

The standard SI unit for time.

What is second?

200

The standard SI unit for mass.

What is Kilogram?

300

The standard SI unit for temperature.

What is kelvin?

400

The standard SI unit for length. 

What is meter?

500

The standard SI unit for volume.

What is liter?

Vocabulary

100

The closeness of measurements to the accepted value.

What is accuracy?

200

Combinations of SI base units

What is a derived unit?

300

The amount of space occupied by an object.

What is volume?

400

How close a series of measurements are to one another.

What is precision?

500

Defined as the difference between an experimental value and an accepted value.

What is error?

Relationships

100

|experimental value - accepted value| / accepted value times 100

What is the equation for calculating percent error?

200

D = m / v 

What is the formula for density?

300

K = ^oC + 273 

What is the equation for converting kelvin to degrees celsius?

400

A systematic approach to problem solving that uses conversion factors to move, or convert, from one unit to another.

What is dimensional analysis?

500

These are used show patterns in scientific data.

What is a graph?