1. INTRODUCTION TO MATTER January 6 th & 7 th

2. 1. Matter that consists of two or more substances mixed together but not chemically combined is called a(n) ____________________________. -Element -Compound -Pure Substance -Mixture Pretest to gauge depth of knowledge

3. 2. The simplest type of pure substance is a(n) _________________. -Compound -Alloy -Solution -Element

4. 3. In a solution, the ability of a substance to be dissolved is called the ____________. -Solvent -Solute -Solubility -Insoluble

5. For the next questions, determine whether it is a physical property or chemical property 4. When exposed to oxygen, iron will rust________ Chemical 5. Paper is flammable___________ Chemical 6. Gold is shiny____________ Physical

6. Matter  Matter is anything that has mass and volume  Things that are composed of matter…  You  Air  Plastic  Metal  Wood  Water

7. Properties of Matter  Matter can have all sorts of different properties.  List properties that can differ between matter.  Chemistry- The study of the properties of matter and how matter can change.

8. Types of Matter  Matter can be classified under two main types  Pure substances  Mixtures*We will get more into this next class period

9. Properties of Matter  All matter has two kinds of properties  Physical  Chemical  Physical properties are ones that can be observed without changing the substance.  Chemical properties are ones that can be observed when changing the substance.

10. Physical Properties  Physical properties are used to observe and describe matter.  Physical properties include…  Appearance  Texture  Color  Odor  Melting Point  Boiling Point  Density  Solubility

11. Physical Properties Cont.  Most physical changes can be undone very easily.

12. Chemical Properties  When we change a substance we can see the chemical properties.  Chemical Properties…(can only be observed when an object changes)  Reactivity  pH  Oxidation  Signs of chemical changes  Change in texture  Change in odor  Change in color

13. Chemical Properties Cont.  When matter changes chemically it is impossible or extremely difficult to reverse.