Chapter 1

Matter and Measurements

The Periodic Table of Elements

The Most Common Elements (memorize these)  http://simple.wikipedia.org/wiki/List_of_co mmon_elements  Know the name and symbol. Be ready for a quiz!! (Change the spelling of Sulfur from Sulphur)

Chapter 1-1 Vocabulary Define and give 2 examples of the following Complete using the internet. Type in Word, save to your drive and email to me.

 Element  Compound  Mixture  Homogeneous Mixture  Heterogeneous Mixture

Element ADventure

 Webquest time!!!

 http://web.buddyproject.org/web017/web 017/quest.html

Online Quiz

 http://www.chem4kids.com/files/elem_intr o.html

Movie Day!

 Matter and Its Properties: What Makes Up Matter?  Quiz to follow!

Chapter 1-2 Vocabulary Define and give 2 examples of the following Complete using the internet. Type in Word, save to your drive and email to me.

 Unit  English System  Metric System  International System (SI)  Significant Figures

Complete the following Chart for the SI Units of Measurement

Physical Quantity Mass Name of Unit Symbol Length Temperature Time Amount of a Substance Electric Current Luminous Intensity

Use: http://physics.nist.gov/cuu/Units/units.html

Complete the following SI prefixes

Prefix

M K H 100 Name of unit here 1 D C M Μ N

Symbol

1,000,000 1000 0.1

0.01

Meaning

0.001

0.0000001

0.0000000001

Power of 10 for scientific notation

10 6 10 3 10 2 10 1 10 -1 10 -2 10 -3 10 -6 10 -9 Use: http://physics.nist.gov/cuu/Units/prefixes.html

SI Unit Review

 http://www.science.uwaterloo.ca/~cchieh/ cact/c120/siunits.html

Counting Significant Figures

   Counting: – With a decimal: – Without a decimal: Try these!!

Extra Practice: – http://science.widener.edu/svb/tutorial/sigfigu res.html

– http://antoine.frostburg.edu/chem/senese/10 1/measurement/sigfig-quiz.shtml

 

Rules of Significant Figures

Use http://en.wikipedia.org/wiki/Significance_arithmetic How do we know how many figures (numbers) to write when we are adding or subracting 2 or more numbers?

 –    Using this information, find the answer to the following: 2.1 + 2.11 = 15 + 5 + 6.12= 86.232 – 5.00 = How do we know how many figures (numbers) to write when we are multiplying or dividing 2 or more numbers?

– Using this information, find the answer to the following: – 35.72 (0.00590) = – – 6810.2 / 2.4 = 4450 ÷ 5.00 =

Significant Figure Practice

 http://science.widener.edu/svb/tutorial/sig figures.html

 http://antoine.frostburg.edu/chem/senese /101/measurement/sigfig-quiz.shtml

 

Unit Conversions

Temperature – Kelvin: – Celsius: – Fahrenheit: Practice these conversions:  320K = ______________________ °C   25°C = ______________________K 37.0°C = _____________________K   -62°C = ______________________K 50K = _____________________°C  163°C = _____________________K

Dimensional Analysis

 Try this website: http://www.chemcollective.org/stoich/di mensionalanalysis.php

  Because there are two different units for any measurement, we need to be able to convert between the two. Common conversions: (You will be given these, you do not have to memorize them! YAY!)

Dimensional Analysis Steps

– Write what you know – Form a ratio using your conversion charts.

– Be sure your units cancel out – Multiply across the top and divide by what is on the bottom.

– Check your number of significant figures.

– Make sure your answer makes sense.

Try These!

1.

How many hours in 345.72 days?

2. An Italian bicycle has its frame size given as 62cm. What is the frame size in inches?

3. The length of a marathon is 26.2 miles. What is this distance in kilometers?

4. According to a highway sign, the distance from St. Louis to Chicago is 295 miles. How far is this distance in kilometers?

5. A certain US car has a fuel efficiency rating of 36.2 miles per gallon. Convert this to kilometers per liter.

6. How many seconds are we in school every year? (We are in school 180 days per year, 6 and a half ours each day.)

Properties: Chemical vs. Physical  What is a chemical property?

 What is a physical property?

 What does intensive and extensive mean?

– Hint: http://www.fordhamprep.org/gcurran/sho/sho /lessons/lesson15.htm

Solubility

 Define solubility: http://en.wikipedia.org/wiki/Solubility  Solve this problem: – Taking the solubility of potassium nitrate, KNO3, to be 246 g/ 100 g of water at 100°C and 32 g / 100 g of water at 20°C, calculate:   the mass of water required to dissolve 100 g of KNO3 at 100°C.

the amount of KNO3

Density

 Define Density:  What is the equation for Density?

 Complete the following problem: – To determine the density of ethyl alcohol, a student pipets a 5.00 mL sample into an empty flask weighing 15.246 g. He finds that the mass of the flask + ethyl alchol = 19.171 g. Calculate the density of ethyl alcohol.