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Chemical Interactions Overview

FOSS AND NATIONAL STANDARDS

The Chemical Interactions Course for grades 7–8 supports the following National
Science Education Standards.

 

SCIENCE AS INQUIRY

Develop students’ abilities to do and understand scientific inquiry

  • Design and conduct a scientific investigation.
  • Use appropriate tools and techniques to gather, analyze, and interpret data.
  • Develop descriptions, explanations, predictions, and models using evidence.
  • Think critically and logically to make the connections between evidence and explanations.
  • Communicate scientific procedures and explanations.
  • Use mathematics in scientific inquiry.
  • Understand that scientific explanations emphasize evidence.

CONTENT: PHYSICAL SCIENCE

Develop students’ understanding of properties and changes of properties in matter and understandings of transfer of energy.

  • A substance has characteristic properties such as density, a boiling point, and solubility, all of which are independent of the amount of the sample. A mixture of substances often can be separated into the original substances using one or more of the characteristic properties.
  • Substances react chemically in characteristic ways with other substances to form new substances (compounds) with different characteristic properties. In chemical reactions, the total mass is conserved. Substances often are placed in categories or groups if they react in similar ways; metals is an example of such a group.
  • Chemical elements do not break down during normal laboratory reactions involving such treatments as heating, exposure to electric current, or reaction with acids. There are more than 100 known elements (90 of them naturally occurring) that combine in a multitude of ways to produce compounds, which account for the living and nonliving substances that we encounter.
  • Energy is a property of many substances and is associated with heat and the nature of a chemical. Heat moves in predictable ways, flowing from warmer objects to cooler ones, until both reach the same temperature. In most chemical reactions, energy is transferred into or out of a system.
HISTORY AND NATURE OF SCIENCE

Develop students’ understanding of the nature of scientific inquiry.

  • Scientists formulate and test their explanations of nature, using observation, experiments, and theoretical and mathematical models. Although all scientific ideas are subject to change and improvement in principle, for most major ideas science, there is much experimental and observational confirmation.

SCIENCE IN PERSONAL PERSPECTIVES

Develop students’ understanding of personal health.

  • Safe living involves the development and use of safety precautions and the recognition of risk in decisions.

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