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Name Science Benchmark 2 Study Guide 2017Date Physical and Chemical Changes: ANSWER KEY Define: Mixture: two or more substances combine and DO NOT make a new substance Physical Change: two or more

How to fill out physical and chemical changes

How to fill out physical and chemical changes

1. To fill out physical changes, you need to identify the change in appearance or physical properties of a substance without forming a new substance. This can include changes in shape, size, color, state of matter, or density.
2. To fill out chemical changes, you need to identify the formation of a new substance with different chemical properties. This can include changes in odor, color, temperature, gas production, or the formation of a precipitate.
3. For both physical and chemical changes, you should observe the initial and final states of the substances involved, note any changes in energy (such as heat being absorbed or released), and consider any accompanying reactions or conditions.

Who needs physical and chemical changes?

1. Scientists, researchers, and students studying chemistry need to understand and recognize physical and chemical changes as fundamental concepts in the field.
2. Industrial chemists, engineers, and manufacturers also need to identify physical and chemical changes to develop and optimize processes, ensure product quality, and maintain safety.
3. In everyday life, anyone can benefit from recognizing physical and chemical changes to understand natural phenomena, make informed decisions about household products, and appreciate the world around us.

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What is physical and chemical changes?

Physical changes are changes affecting the form of a chemical substance, but not its chemical composition. Chemical changes occur when a substance combines with another to form a new substance.

Who is required to file physical and chemical changes?

Any individual or organization that handles or produces chemicals may be required to file physical and chemical changes.

How to fill out physical and chemical changes?

Physical and chemical changes can be filled out by providing detailed information about the substances being used or produced, any potential hazards, and safety measures in place.

What is the purpose of physical and chemical changes?

The purpose of reporting physical and chemical changes is to ensure the safety of workers, the community, and the environment by identifying and managing potential risks.

What information must be reported on physical and chemical changes?

Information such as the name of the chemicals being used, their quantities, potential hazards, safety data sheets, and emergency procedures must be reported on physical and chemical changes.