# Science Exam

## ISP Lab Safety Notes:

For Every Lab:

• Goggles must be kept over your eyes until Mr.Leeds says to put them away (even if you already finished and cleaned up)
• Report all accidents and spills to Mr.Leeds immediately
• Try your best to use common sense

In Case of Emergency:

• Nurse: Ext: 2828

Safety Equipment in Classrooms:

• Fire extinguisher
• Fire blanket
• Eye wash/shower

Chemicals:

• Never taste chemicals
• Always waft liquids to test odor
• Never waft solid powders
• Avoid touching chemicals
• Always wash hands with soap and water after lab
• If chemicals touch skin: flush skin with water for 1 minute and notify Mr.Leeds

Glass:

• Hot glass and cold glass looks the same
• Never use chipped or broken glass (tells Mr.Leeds and dispose of broken glass in proper trash
• Never use force to remove or insert broken glass

Alcohol Burners:

• Roll up sleeves, put up long hair, (not just pulled back or you cant do the lab)
• Never look away from a lit burner
• Never point the open of a hot test tube at yourself or someone else
• Do not look down into a test tube/beaker while it is being heated
• Make sure burner is capped and flame is out when done

Emd of Experiment:

• CLEAN-UP AREA & MATERIALS COMPLETELY!!! (Or you loose points)
• Make sure the burner is out if one was used
• Keep goggles on your eyes until Mr.Leeds says to put them away

## Chapter 1 Test:

Calculations:

L x W x H= V

Volume of Dry Sand-

Volume of Water-

Volume of Sand and Water-

Volume of Sand Alone-

Volume of Air Space-

% of Dry Sand that is Sand-

% of Dry Sand that is Air Space-

Sensitivity of a Balance-

Did any student make mistakes? Where there massing off? How would you tell?

Measurements-

1. Volume
2. Mass
3. Count

1. Volume
2. Mass
3. Other Mean

Measure Lines.

Determine how much liquid is in a cylinder.

## Chapter 2 Test

Calculations:

Mi of a substance

Mf of a substance

Delta M

Percentage change in mass- dm over mi = x over 100 (cross multiply)

## Chapter 3 Test (3.1-3.8)

Calculations:

D= M over V

Delta M

Delta V

Mass of gas (it is the delta M positive)

Volume of gas (it is the delta V positive)

Density of gas

others in note book