PPT-Chemical and Physical Changes

Mrs Lowe April 2011 Chemical changes Chemical change is a change that forms a new type of matter Chemical property is a feature of matter that can cause a chemical change Examples of a different type of matter forming during a chemical change. page 133. Physical Change. Any change in size, amount, shape, . or state/phase . of matter.. nothing new is created. Ex.) melting a block of ice, cutting a piece of paper in half. Chemical Change. substances change . #1: What happens to a substance when a chemical change occurs?. #2: What are some signs of a chemical change?. Bell Ringer: Tuesday 10/1/13. Read the paragraph below and determine the main idea. Then, write and answer the questions. 1.7. Physical Changes. Physical Change. : the substance involved remains the same, even though it may change state or form. . Examples: . Dissolving – stirring a spoonful of sugar in water. Melting –an ice cube melts. Matter. Every element/compound is unique in some way from all others.. If you know enough about a substance, you can figure out what it is.. If you know what a substance is, you can know all types of things about it.. EQ: How are changes in matter related to changes . in energy?. Changes in Matter. You are at the beach. You built a sandcastle!. You notice storm clouds gathering in the distance.. You are sad : (. You know your sandcastle is about to go bye-bye.. Blue Color. Blue Color. Physical property. Density. Density. Physical property. Flammability. Flammability. Chemical property- The original substance is fundamentally changed. . Solubility- (dissolves into a liquid to make a solution). How to tell the difference. Physical properties. Inherent characteristics of a substance that can be determined without altering its composition. Associated with its physical existence. Color, taste, odor, state of matter (solid, liquid, or gas), density, melting point, boiling point.. Chapter 2 Section 2. Describing matter. Matter: anything that has mass and takes up space. Mass – the amount of matter in something. Volume – the amount of space something occupies. Which of the following is matter?. Changes. The Difference. Physical Change . – . matter changes form . but is still made of the same molecules, typically . reversible. Chemical Change . – a . change in the molecules . occurs, . cannot be reversed. The Digestive System. Amazing Facts . . We make 1-3 pints of saliva a day.. The average male will eat about 50 tons of food to sustain weight of 150 pounds. A horse’s intestines are about 89 feet long. Density. A liquid becomes a gas. .. Burn bacon in the pan. .. Magnetic. Bake . cupcakes. Burning . leaves. Reactivity. Blue Station. Define the following terms.. Matter. Physical Change. Chemical Change. Physical and Chemical Changes Physical and Chemical Properties Everything around us has physical and chemical properties. Physical Properties Characteristics you can observe without changing the substance into something new. Objectives. Compare chemical reactions to physical changes. Compare parts of an atom. Calculate the mass of one mole of an element or compound. Explain how ionic and covalent bonds are formed. Identify the parts of chemical equations. and. Physical Properties. . Observations that . DO NOT CHANGE . the substance or mixture. Measure. See. Smell. Hear. Touch. Taste. Chemical Properties. Describes how the substance or mixture will react with another.