Study Guide IPS
Fire Extinguisher, fire blanket, and eye wash/shower
Don't waft powders. Only gases.
Don't use chipped glass
Roll sleeves up
Don't walk away from alcohol burner.
Keep goggles on.
Hot and cold glass look the same. Avoid touching.
Notify Mr. Leeds if something bad happens.
3. 50 cubic centimeters.
4. The width of A and B is different.
5. 7 cm3
6. A: 8 cubes
B: 27 cubes
7. The second box.
8. Because the width expands as the cones length rises.
1.2 Volume Notes
1. Calcium chloride (chlorine+calcium)
-Hydrotropic: attracted to water (absorbs water)
uses: canned vegetables, (keeps them from getting mushy), electrolytes in sports drink
Sodium Bicarbonate (baking soda)
uses: baking, cat litter, tooth paste, laundry detergent
Lab: Heating Baking Soda
Experimental factor: heated test tube
Indicator: the tea (showed color difference)
Variable: something you want to measure
Independent Variable: causes a change in dependent - heat or flame
Dependent Variable: color of tea
Control factors: same type of tea, amount of baking soda, amount of tea, stirring the same amount of time, same size test tube.
Lab 1.4 Sand and air space
Pour water into sand
1.6 Mass Notes
Earliest balance found in Egypt (Approximately 7000 years old)
1.8 The Sensitivity of a Balance
1.8 Post Lab
After 1982: 2.5% copper 97.5%
1943 Made of steel and zinc. copper needed for shell casings (bullets)
A 1943 copper penny has sold for 82,500
The Sensitivity of a Balance
Lab 2.1 Salt Dissolve into water
The outside of the bottle is wet during Mi
Not drying off the cap --> water in Mi not there for Mf.
remove cap before Mf--> spillage/ leakage
not shaking long enough ---> not dissolve
cap not on tightly ---> spillage/ leakage
spill salt when pouring into bottle
graphs used for: financial statistics---> sports, doctor, weather
Histogram Rule: If data falls on a line it is graphed in column to the right.
1. Find the largest and smallest number you must mass.
2. You can use two slashes to jump a bunch of intervals
2.4 Ice, Ice, Baby
Cap not sealed (hole), evaporation
Ice not fully melted
Bottle is wet during Mi --> lose Mass
Shaking bottle ---> lose Mass
2.5 The Mass of Copper and Sulfur
Hole in the rubber sheet ---> gas escapes
sheet is not on t. tube tightly ---> gas escapes
Clean pan between Mi and Mf
Melting point of Sulfur 112 C. (235 F)
Yellow smoke ---> water in sulfur turns to vapor (gas) and rises in test tube
When it cooks---> when sulfur and copper bond they create copper sulfide
2.6 Lab The Mass of a Gas
Cap is wet during Mi - lose mass
Water in pan during Mi - lose mass
cap not on tight enough or quick enough
Alka-Seltzer: Anticid and pain reliever: aspirin, citric acid, sodium bicarbonate
Conservation of Mass
Law of Conservation of Mass: In a closed system mass will remain constant, regardless of the actions of the processes inside the closed system.
Property of a substance: this helps to identify what the object is made out of.
3.2 Lab Mass and Volume
Water splashes out of graduated cylinder - volume decrease
Mass and Volume Notes
Example: long aluminum cylinder and the small aluminum cylinder
2. The mass of an object will double if it's volume doubles.
3. Objects that have the same volume but are made of different substances will not have the same mass.
Example: brass and aluminum cylinders
is specific to liquids solids and gases
can help to identify substances
Density=mass÷velocity D = M ÷ V
3.5 The density of the solid
All have different densities because the rock is formed by many substances being compressed together different substances = different densities.
water splashes out of the graduated cylinder = mass increase
find the volume of rock before mass = increase of mass
paint chips off objects = Mass decrease
Lab 3.6 the density of a liquid
Point of Lab
cylinder is not re-massed empty
outside of cylinders what
substance a: magnesium sulfate: Epsom salt
substance B: water
Lab 3.7 The Density of a Gas
touch tablet = decrease in mass
forget foil = decrease in mass
Spill water when finding volume of bottle
2.2 kg = 1 lb
1 kg = 1000 grams
Volume of dry sand minus sand alone is air space
fraction of sand that is air is air divided by sand
volume: L x W x H (A x B x C)
Standard unit of length= meters (m)
1 centimeter 1 cm= .01 m cent=100
a small cube 1 cm on each side. In cubic centimeters.