Laboratory Safety and Scientific Investigations (2 days)
Texas Essential Knowledge and Skills (TEKS)
Scientific processes. The student, for at least 40% of instructional time, conducts laboratory and field investigations using safe, environmentally appropriate, and ethical practices. The student is expected to:
(1A) demonstrate safe practices during laboratory and field investigations, including the appropriate use of safety showers, eyewash fountains, safety goggles, and fire extinguishers; (1B) know specific hazards of chemical substances such as flammability, corrosiveness, and radioactivity as summarized on the Material Safety Data Sheets (MSDS); and (1C) demonstrate an understanding of the use and conservation of resources and the proper disposal or recycling of materials. Scientific processes. The student uses scientific methods to solve investigative questions. The student is expected to: (2A) know the definition of science and understand that it has limitations, as specified in subsection (b)(2) of this section; (2B) know that scientific hypotheses are tentative and testable statements that must be capable of being supported or not supported by observational evidence. Hypotheses of durable explanatory power which have been tested over a wide variety of conditions are incorporated into theories; (2C) know that scientific theories are based on natural and physical phenomena and are capable of being tested by multiple independent researchers. Unlike hypotheses, scientific theories are well-established and highly-reliable explanations, but may be subject to change as new areas of science and new technologies are developed; (2D) distinguish between scientific hypotheses and scientific theories; |
Answer Keys
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