Unit 1: Foundations of Chemistry

Scientific Method

100

A hypothesis must be written a __________ and _____________ statement.

What is cause and effect?

200

If a hypothesis is not supported by the experimental data, the next step is to _________.

What is create a new hypothesis?

300

Numerical data is called?

What is quantitative data?

400

When graphing, the independent variable is found on which axis?

What is the x axis?

500

What two variables are needed in a hypothesis?

What are manipulating and responding variables? (also know as independent and dependent variables)

Scientific Notation

100

The coefficient of a value in scientific notation should be between which two values?

What is 1 and less than 10?

200

Expand the following number from scientific notation: 6.32 x10^-3

What is .00632?

300

Write the following number in scientific notation with the correct number of significant figures. 

17.23

What is 1.723 x10¹?

400

Divide. Make sure that your final is in scientific notation and has the correct number of significant figures.

(3.75 x10^-2) / (2.6 x 10^-1)= 

What is 1.4 x10^-1?

500

Add and write your final answer in scientific notation.

(5.6084 x10¹) + (6.3616 x10³) =

What is 6.4177 X10³?

Significant Figures

100

Determine the number of significant figures in 6.540

What is 4?

200

Round 5.03469 to 3 significant figures.

What is 5.03?

300

Round the following to 2 significant figures 1239678.

What is 1.2 x10⁶?

400

What is the formula for determining a percent error?

What is (|actual-experimental| /actual value ) x100?

500

When determining the average deviation of a data set, is accuracy or precision being tested?

What is precision?

Metric System

100

The base unit of length is?

What is meter?

200

Metric is a base ______________ system which makes it easier to convert from one prefix to another.

What is 10?

300

Convert .25 m = cm

What is 25?

400

Convert 1.25 mm = cm

What is .125 cm?

500

Convert. 5.27 x10² cm = hm. The answer must be in scientific notation.

What is 5.27 x10^-2 hm?

Dimensional Analysis

100

The conversion factor between km and m is?

What is 1km = 1000 m?

200

Each measurement must have what 2 components? 

What is a number and unit (label)?

300

I bought 4 quarts of milk at the store. How many mL is that? ( show your work/ answer must have the correct number of SF)

What is 4000 mL?

400

There are 100 yards on a football field. How many meters is that? (show your work/ answers must have the correct number of sig figs)

What is 90 m?

500

How many fluid ounces are in a bottle of 950 mL of bleach? (show your work/ answers must have the correct number of sig figs)

What is 32 fl. oz?