Survey
* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
Download File
Document related concepts
Transcript
Name _________________________________________________ Period _______ Score _________ Physical and Chemical Changes and Properties of Matter Worksheet Classify the following as chemical change (cc), chemical property (cp), physical change (pc), or physical property (pp). 1. _____ Heat conductivity 8. _____ Combustible 2. _____ Silver tarnishing 9. _____ Water freezing 3. _____ sublimation 10. _____ Wood burning 4. _____ magnetizing steel 11. _____ Acid resistance 5. _____ length of metal object 12. _____ Brittleness 6. _____ shortening melting 13. _____ Milk souring 7. _____ exploding dynamite 14. _____ baking bread Identify the following as being true or false to the left of the sentence. ________ 15. A change in size or shape is a physical change. ________ 16. A chemical change means a new substance with new properties was formed. ________ 17. An example of a chemical change is when water freezes. ________ 18. When platinum is heated, then cooled to its original state, we say this is a physical change. ________ 19. When milk turns sour, this is a physical change because a change in odor does not indicate a chemical change. ________ 20. When citric acid and baking soda mix, carbon dioxide is produced and the temperature decreases. This must be a chemical change. Identify each of the following as a physical or chemical change. 21. _____ You leave your bicycle out in the rain and it rusts. 22. _____ A sugar cube dissolves. 23. _____ Scientist break-up water into oxygen and hydrogen gas. 24. _____ Burning coal for a barbecue. 25. ______ Trimming a bush because it has grown too tall. Classify each of the following substances as an element, compound, colloid, suspension, homogenous or heterogeneous mixture. Sand Soil Salt Pure water Gold Brass Carbon dioxide Oxygen Saltwater Silver Italian dressing Raisin bran Apple pie Kool aid Sugar water Chocolate chip cookie Tacos Gatorade Gold Calcium Lead Skim milk Potassium Sugar Hydrogen Salad Lithium iodide peroxide Physical and Chemical Properties: Classify the following properties as either chemical or physical by checking the appropriate column. Physical Property Blue color Density Flammability Dissolves in water Boils at 100 degrees Rusting Exploding fireworks Melting point Reacts with water Hardness Sour taste Scratches glass Shine odor Chemical Property Physical Property Paper ripped in half The banana is yellow Gasoline is flammable Helium does not react with other elements Apples turn brown in oxygen Rocks fizz when acid is applied Potassium is kept submerged in oil to prevent contact with air Diamond is used to cut rocks Acid in tomato sauce causes heartburn Lead is more easily bent than aluminum A diamond Barium melts at 725 ºC Charcoal making ashes A nuclear bomb Chemical Property Chemical and Physical Changes: Classify the following as a physical or chemical change Physical Change Glass breaking A rusting bicycle Spoiling food Burning toast Whipping cream Cutting the lawn Burning Leaves Corroding metal Frying an egg Pouring milk on cereal Melting wax Breaking an egg Burning oil Chemical Change Physical Change Chemical Change Hammering wood together to make a tree house Melting butter for popcorn Glassblower making a sculpture Separating sand and gravel Water evaporating from a pond Mixing kool aid powder into water Freezing chocolate covered bananas Squeezing oranges to make orange juice Bleaching your hair Fireworks exploding Tarnishing of silver Mixing flour and salt Cutting wood into 10 pieces Phases of matter: decide whether each statement describes a solid, liquid or a gas. 1. ____________________ has a definite shape and definite volume 2. ____________________has an indefinite shape and indefinite volume. 3. ____________________has particles that are tightly packed together. 4. ____________________has a definite volume, but no definite shape. 5. ____________________its particles can more freely to all parts of the container 6. ____________________its particles can change position by sliding past each other. 7. ____________________ the only movement of its particles is small vibration. 8. ____________________ A container of this substance is always completely full.
