Chemical Properties and Change Notebook PDF

Chemical Properties and Change.notebook February 21, 2023 - Find Physical Properties Activity to check and discuss Today - Chemical Properties and Change Wed – Changes Learning Lab Thurs - Density...

Chemical Properties and Change.notebook February 21, 2023 - Find Physical Properties Activity to check and discuss Today - Chemical Properties and Change Wed – Changes Learning Lab Thurs - Density Fri - Density Activity Mon, Feb 27 - Density Lab Tues - Review - Density Lab Due Wed - Quiz (first part of unit) Thurs - Elements & Compounds Fri - Periodic Table Mon, March 6 - Inside The Atom Tues - Rest of Hunting the Elements Wed - Bohr-Rutherford Diagrams Thurs - Patterns in the Periodic Table Friday - March Break Mon, March 20 - Molecular Compounds Tues - Ionic Wed - Flame Tests Thurs - Gas Tests & Chemical Reactions Fri - Review Mon, March 27 - Chemistry Unit Test Chemical Properties and Change.notebook February 21, 2023 Chemical Properties and Chemical Change Chemical Properties and Change.notebook February 21, 2023 A chemical property describes a substances ability to undergo changes to its composition to produce one or more new substances. Ex. Flammable (Wood) Combustible (Gasoline) Corrosive (Acids) Reacts with Acids (Certain metals) Rusts (Iron) We take advantage of the chemical properties of substances in order to create products we want. Ex. Denim is fire resistant Baking soda causes a cake to rise Bacteria turn milk into cheese Chemical Properties and Change.notebook February 21, 2023 You can tell it is a chemical change because the new substance produced has different properties (colour, texture, etc). Ash from a fire is white Rust is orange and flaky Signs of Chemical Change 1. A new colour appears 2. Heat and Light is given off (flame) 3. Bubbles of gas are formed when not heated 4. A precipitate forms (a solid material appears when 2 liquids combine) 5. The change is difficult to reverse Note: Some of the above changes might also accompany physical changes. Think about whether a new substance is formed. Examples: A light bulb gives off light and heat, but it isn't altered so it is physical Boiling water creates bubbles, but it is evaporation so it is physical Chemical Properties and Change.notebook February 21, 2023 Demos Chemical and Physical Change Demos Phys/Chem Starting Substances Properties Observations Change? Evidence Clear, copper sulfate water colourless Resulted in a just dissolves, copper (II) sulfate liquid & blue, liquid physical not a new blue crystals substance Blue liquid flakes of orange colour change copper (II) sulfate iron and grey, solid appears on chemical & new solid solid wire metal appears Both are creates a yellow formation of a lead nitrate clear, potassium iodide colourless powder floating chemical yellow in a liquid precipitate liquids Clear, glows red when neon gas the gas tube is electricity colourless on, returns to physical not changed gas in a tube normal when off Grey, malleable gas is produced, magnesium metal metal and bubbles have hydrochloric acid clear, formed chemical magnesium gets smaller colourless liquid Chemical Properties and Change.notebook February 21, 2023 Homework: Answer p. 186 #1, 3, 4, 6, 7