Physical and Chemical Properties & Changes

Matching Match each definition to the correct term. A change that occurs when one or more substances change into entirely new substances with different properties. Chemical Change Characteristic that cannot be observed without altering the substance Chemical Properties A change of matter from one form to another without a change in chemical properties Physical Change The characteristics of a substance that can be observed or measured without changing the substance Physical Properties The elements or compounds produced by a chemical reaction. Products The elements or compounds that enter into a chemical reaction. Reactants Changes of Matter: StudyJams! Science Watch this video to learn more about Physical Chemical Changes Changes of Matter Determine if the changes listed below are Chemical or Physical. Physical Change: the appearance of a substance changes, but chemically the substance is the same.Chemical Change: a chemical reaction takes place, and the substances produced (reactants) are different from the original substances (product). Physical Changes Erosion of a riverbed by water Carving a statue out of water Ice cream melting Sanding a piece of wood Chocolate melting Chemical Changes Baking a cake A flashbulb flashes Cooking waffles A red mark appears after a bee sting Leaves changing color Fireworks exploding Vinegar is mixed with baking soda Lighting a match Changes in Matter Complete the following table. Describe changes in properties that you might notice during each process and state whether the changes are chemical or physical. Event Observable Changes Type of Change Baking a cake texture, heat, color Chemical Burning a log heat, light chemical Freezing water state change physical Fill in the blanks with the term that best completes each sentence. 1. The smallest particle of an element is a(n) atom.2. A(n) compound has different properties that the elements that compose it and is made of substances combined in a specific ration.3. Saltwater is a type of well-mixed mixture called a(n) solution.4. A chemical change is also referred to as a(n) chemical reaction.A(n) precipitate is a solid formed from a solution during a chemical reaction.6. When combined substances retain their individual properties, the result is a(n) mixture.7. A(n) chemical bond is formed or broken apart during a chemical reaction.8. The combination of two or more atoms is called a(n) molecule.9. A(n) element is the simplest type of substance and cannot be broken down into any other substances.10. Chemistry is the study of the properties of matter and how matter changes. Properties of Matter Watch this video to learn more about Physical and Chemical Properties. Determine whether the following terms describe physical or chemical properties: Physical Properties: characteristics of a substance that can be observed or measured without changing the substance.Chemical Properties: characteristics that cannot be observed without altering the substance. Physical Properties Oxygen is odorlessand colorless. The piece of metal ismagnetic. Diamonds are a veryhard substance. Water is a liquid. The density of wateris 1.0 gram per cubiccentimeter. The tree is 8 metershigh. Copper conductselectricity. The mass of the NaClsample is 30 grams. The color of the ballis red. Oxygen is a gas. Nitrogen is acolorless gas. A bar of lead is moreeasily bent than is a barof aluminum of the samesize. A sheet of copper canbe pounded into abowl. Chemical Properties Sodium reacts veryeasily with otherelements. Gold isnonflammable. Copper turns greenwhen exposed to theenvironment. Alka-Seltzer tabletsreact with water toproduce gas. The gas isflammable. Argon is not veryreactive. The silver spoonstarnished and turnedblack. Silver necklacestarnish and turngreen. Baking Soda reactswith vinegar. A piece of charcoal, which ismostly the substance carbon,glows red, gives off heat, andbecomes a gray ash. Rocks containing carbonatescan be identified becausethey fizz when hydrochloricacid is applied Iron reacts withoxygen and formsrust. Helium does notreact with any otherelement. Acid in tomato saucecan corrodealuminum foil.