Presentation on theme: "WARM UP What do the words football, baseball, popcorn, and pancake"— Presentation transcript:
1 WARM UP What do the words football, baseball, popcorn, and pancake have in common with chemistry?
2 Classifying Matter: Elements, Compounds, and Mixtures USE YOUR NOTES! FILL IN THE BLANKS!
3 CompoundsPure substance composed of two or more different elements joined by chemical bonds.Has a chemical formula. The subscript(small number) tells you how many of that element are needed.Made of elements in a specific ratiothat are always the sameCan only be separated bychemical means, not physicallyH2ONaClCO2
5 MixturesA combination of two or more pure substances that are not chemically combined.No chemical change takes placeEach item retains it’s own properties in the mixture.They can be separated physically with time, or pressure.Chem4kids.com
7 http://studyjams. scholastic Mixtures vs. Compounds
8 Can you identify the following? Tell me is the item in the photo is anelement, compound, or mixture.(14 photos)element : contains just one type of atom.compound : contains two or more different atoms chemically joined together.mixture : contains two or more different substances that are only physically joined together, not chemically.
38 Notes Detailed notes are located at: mixtures-notes-isn.pdfFlow Chart:isn.pdf
39 Is a Glow Stick Compound or Mixture? How it works:Glow sticks give off light when two solutions are mixed.The sticks consist of a small, brittle container within a flexible outer container. Each container holds a unique solution.When the outer container is flexed, the inner container breaks, allowing the solutions to combine, causing the necessary chemical reaction. After breaking, the tube is shaken to thoroughly mix the two components