'Original substances' presentation slideshows

Emergency Response & Rescue Planning by Mr. G. S. Saini Director, National Civil Defence College

Emergency Response & Rescue Planning by Mr. G. S. Saini Director, National Civil Defence College . Scenario #1. You are a Safety officer of your Plant. You receive a call from a worker reporting a person down, clutching his throat and coughing.

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Physical and Chemical Changes

Physical and Chemical Changes. Section 3.2. Physical Changes. A physical change is one in which the form or appearance of matter changes , but not its composition . For example, a frozen lake has experienced a physical change.

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Matter is anything that has mass and occupies space.

Matter is anything that has mass and occupies space. Mass : is the amount of material. Mass : is what gives an object the properties of weight and inertia. Weight : is a force and is due to the pull of gravity on the object. Inertia : resistance of an object to change its motion.

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Physical and Chemical Changes

Physical and Chemical Changes. Physical Changes. No new substance is formed Indicators: size and shape change, phase change, mixture, dissolving. Chemical Changes. New substance formed from original substances that lose their original properties.

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Physical and Chemical Changes Notes Pages 78-87

Physical and Chemical Changes Notes Pages 78-87. 1. Define physical change. Give an example of a physical change. A change in which the form or appearance of matter changes, but not its composition. Examples: water changes to ice. 2. Generally, how can you cause a physical change?.

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Law of Conservation of Mass

Law of Conservation of Mass. In a chemical reaction, original substances ( reactants ) are consumed and new substances ( products ) are formed. The total mass of the reactants will always equal the total mass of the products . Reactants Products.

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Section 8.1

Section 8.1. Describing chemical reactions. Chemical Reactions. A chemical reaction is the process by which one or more substances are changed into one or more different substances.

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