Zelda L. Kravitz
I. Place answer to left of number.
-
____
___ . 1. Add water to acid or acid to water.
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____
___
. 2. Metric units are based on
___
units.
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___
. 3. 0.1 is a
___
.
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____
___ . 4. Gram is a measure of
___
.
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___ . 5. Liter “ “ “ “
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.
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___
. 6. A graduate is used in the laboratory to
___ .
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___ . 7. A meter stick is used to measure
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.
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___ . 8. Mass is a measure of
___
.
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____
___
. 9. Meniscus measures
___
.
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___
. 10. Density is a measure of
___
.
II. Solve the following problems: Do all work on paper.
|
(1)
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(2)
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(3)
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(4)
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(5)
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38.47
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3.89
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4.8)5.989
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24.98)3.6956
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38.79
|
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1.49
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0.49
|
|
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x 1.4
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+138.40
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+1.9
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|
1.
___.
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2.
___ .
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3.
___ .
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4.
___ .
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5.
___ .
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|
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(6)
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(7)
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|
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989.4
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4.589
|
|
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x1.34
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-1.234
|
|
|
6.
___ .
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7.
___ .
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I. Purpose: To determine the problem (the reason for doing the experiment).
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___
8) Draw a 2 centimeter line.
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9) Divide the 2 cm. into 20 millimeters-
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____
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10) Where is 40 ml. on the container.
(figure available in print form)
Choose the best answer
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___
11) Decibels measure sound light heat.
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____
___
12) Light is measured in angstrom, density, velocity.
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____
___
13) From the graph answer the following questions:
(figure available in print form)
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____
___
13) In 8 minutes the temp.
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____
____
____
is 3’, 30’c, 3’c.
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14)
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____
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15) Centigrade is the metric temperature scale.
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____
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16) Heat and temperature can be measured the same way yes, no, maybe.
II. Materials: test tube rack
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test tube(s)
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litmus paper; 5 red, 5 blue
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Caution
: Keep fingers, table, and paper strips dry until you wet them with the powder or liquid.
III. Procedure:
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1) Place
20
drops of each liquid and/or each powder in each test tube. Return eye dropper to jar taken from. DON’T MIX THEM UP. OTHERS WILL SUFFER AND YOU WILL LOSE CREDIT!!!
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____
2) Add 1 strip of each color litmus paper to each tube. What happened?
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3) Rinse tube thoroughly.
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4) Add 1 tsp. powder (white) to each tube.
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5) Add
10
drops of each liquid.
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____
6) What happened: Describe, color, odor.
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____
7) Add litmus strips: one strip each. Was there any change: color, odor?
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____
8) Record information in chart below:
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Red Litmus
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Blue Litmus
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With White Powder
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Tube 1
Tube 2
Tube 3
Tube 4
Tube 5
IV. What do you think the reason was for doing the experiment?
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____
A. State the Problem.:
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V. What facts did you learn from this experiment that is you
conclusion
. List them briefly, but accurately. The conclusion should answer the problem.
