General lab safety experiment 1 neutralization of acids and bases

Biology Lab Assignment

Experiment 1: Design an Experiment

1) List 10 variables that may affect seed germination (5 points)

Temperature

Towel Size*

Towel Moisture*

Outdoor/Indoor

Animal Interaction

Human Error

Sunlight*

Laying Down vs Hanging

Type of Towel

2) Which 3 variables did you test? (3 points)

Sunlight, Towel Moisture, Towel Size

3) Write out your hypothesis for each of your 3 variables. (3 points)

4) List your independent and dependent variables as well as your control. (3 points)

Independent:

Dependent:

Control:

5) Insert a picture showing your 3 variables at the end of testing. Your name and date must be handwritten on a piece of paper in the photo. (5 points)

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6) Insert a table for your data that includes a title, units and any other useful information. (5 points)

7) Insert an appropriate style of graph that includes a title, units and any other useful information. (5 points)

8) Write a short, concise summary (Conclusion) of what you have learned from you experiment. Did you accept or reject your hypothesis? (5 points)

Lab 2 General Lab Safety

Experiment 1: Neutralization of Acids and Bases

1) Insert a photo of your litmus results. The picture needs to include your name and date handwritten on a piece of paper in the photo. (5 points)

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Table 2: Initial Litmus Test Results (5 points)

Container

Chemical Contents

Litmus Results

Additional Observations

A

5 mL Water

Base

Litmus paper is purple

B

.5g Sodium Bicarbonate, 5 mL Water

Base

Litmus paper is blue

C

5 mL Acetic Acid

Acid

Litmus paper is pink

Table 3: Neutralization (6 points)

Amount of Acid

Litmus Result

1 mL

Still very pink

2 mL

Slightly darker pink

3 mL

Almost a reddish color

4 mL

Purple