About This Chapter
Praxis Physics: Scientific Procedures & Techniques - Chapter Summary
Through these lessons, you will review standard scientific procedures and techniques in anticipation of any related questions on the Praxis Physics exam. This chapter will explain standard laboratory equipment, scientific notation, and much more, including:
- Techniques for promoting safety in laboratories
- Laboratory safety equipment
- Proper handling of chemicals, biological materials, and solutions
- Preserving, staining, and mounting microscope specimens
- Laboratory measurements
- Conversion to and from the metric system
Led by expert instructors, these lessons can both be viewed as brief videos and read as complete transcripts, which enables you to review the information at your own pace. Each lesson features a short multiple-choice quiz to gauge how well you comprehend the information you've reviewed. There is also a cumulative chapter exam you may take to review the topics of all the lessons.
1. Common Laboratory Equipment: Types & Uses
Biologists use all kinds of equipment in their labs to run their experiments. In this lesson, you'll identify some of the most common pieces of equipment as well as when you should or shouldn't use them.
2. Laboratory Safety Techniques: Protecting People and Equipment
Laboratory safety is not fun, but following the rules ensures that lab activities can be enjoyed by everyone. In this lesson, we cover some basic lab safety rules to follow that will help lab time be both safe and fun.
3. Standard Laboratory Safety Equipment
Even with proper precautions, lab accidents do happen. When they do, knowing what safety equipment is in your lab, where it is located, and how to use it can prevent further harm to both the lab and the people working in it.
4. Handling Laboratory Solutions, Chemicals & Biological Materials
Working in a laboratory requires careful attention, both for safety and successful completion of tasks. Learn about the many ways biological and chemical substances need to be properly prepared, identified, stored, dispensed, and disposed of.
5. How to Preserve, Stain & Mount Microscope Specimens
Microscopes are incredible tools for observing the tiniest of organisms. Here we will identify the types of slides that can be made and describe how to best preserve, stain, and mount specimens. At the end, you can test yourself with a brief quiz.
6. Understanding Laboratory Measurements: Units & Types
There are many different units that can be used for measurements. This may not only lead to incorrect data measurements, but also to confusion about which units are most appropriate. Therefore, a standard set of units is used for each type of measurement in the biology lab.
7. The Metric System: Units and Conversion
Just like you and your friend communicate using the same language, scientists all over the world need to use the same language when reporting the measurements they make. This language is called the metric system. In this lesson we will cover the metric units for length, mass, volume, density and temperature, and also discuss how to convert among them.
8. Significant Figures and Scientific Notation
Are 7.5 grams and 7.50 grams the same? How do scientists represent very large and very small quantities? Find out the answers to these questions in this video.
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Other chapters within the Praxis Physics (5265): Practice & Study Guide course
- Praxis Physics: Scientific Inquiry & Social Perspective
- Praxis Physics: Vectors & Scalars
- Praxis Physics: Kinematics
- Praxis Physics: Motion
- Praxis Physics: Oscillations
- Praxis Physics: Work, Energy & Power
- Praxis Physics: Linear Momentum
- Praxis Physics: Rotational Motion, Collisions & Conservation
- Praxis Physics: Laws of Gravitation
- Praxis Physics: Fluid Mechanics
- Praxis Physics: Electrical Forces & Fields
- Praxis Physics: Potential & Capacitance
- Praxis Physics: Direct Current Circuits
- Praxis Physics: Magnetism
- Praxis Physics: Optics & Waves
- Praxis Physics: Heat, Energy & Thermodynamics
- Praxis Physics: Modern Physics & Atomic Structure
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