1. Matter and Change Chapter 1 Pages 3-15

2. What is chemistry? Chemistry is the study of matter. –text: “Chemistry is the study of the composition, structure, and properties of matter, the processes that matter undergoes, and the energy changes that accompany these processes” –Chemistry is really a lot more exciting than the text definition!!

3. General fields of study Theoretical chemistry Organic chemistry Inorganic chemistry Analytical chemistry Physical chemistry Biochemistry

5. Within all of the fields there are two different goals of science. Applied scientists Basic scientists

6. What is matter? How do we explain it? Classify it? Matter: has mass and takes up space –Mass: measure of the amount of matter –comes in many forms Fundamental building blocks of matter are elements and compounds

7. Element or Compound? Carbon dioxide Water Helium Hydrogen Carbon Sugar Salt

8. Understanding matter Described by physical and chemical properties Physical properties can be intensive or extensive Intensive properties are those that do not change with the amount of substance, where extensive properties do

9. Intensive or Extensive? Mass Density Boiling point Solubility State of matter Volume

10. Understanding Matter Physical properties: –Color, texture, luster, melting point, boiling point, solubility Chemical properties: –Combustibility, non-reactive, ability to corrode, toxicity

12. Physical or chemical property? Hardness Density Malleability Tendency to corrode Flammability Weight Failure to react with other substances Mass Volume Melting point Ductility

13. Understanding Matter Properties determine type of change (physical vs. chemical) Physical change: –Changes of state (melting, boiling, etc) Solid: definite shape and volume Liquid: definite volume, indefinite shape Gas: indefinite shape and volume Chemical change:

15. Indicators of a chemical change Formation of new substances Change in heat/ energy Gas produced Formation of a precipitate Color change

16. Is the change physical or chemical? Dissolving sugar in water Combining vinegar and baking soda Smashing a glass jar Bending wire Freezing mercury Making caramel from sugar Silver tarnishing

17. Classifying matter

18. Classify it! (element, compound, heterogeneous mixture, homogeneous mixture) Egg Table salt Bronze Dry ice Gasoline Water Oxygen Oil in water Granite Sugar water Alphabet soup Gold Silver ice