Reporting Category #1 Matter & Energy

1. Reporting Category #1Matter & Energy

2. Physical & Chemical Properties • Physical properties are properties that do not change the chemical nature of matter. • Shape, smell, and density • Phase changes: water turning to water vapor

3. Physical & Chemical Properties • Chemical properties are properties that do change the chemical nature of matter. • Color change, heat of combustion, reactivity with water and pH. • Iron Rusting

4. Physical & Chemical Properties • Any substance that contains only one kind of an atom is known as an element. • Each element is represented by a unique symbol. The symbol for each element can be found on the periodic table of elements. • Ex: aluminum (Al), hydrogen (H), calcium (Ca) , mercury (Hg).

5. Categories • 3 Categories in the Periodic Table • Metals • Nonmetals • Metalloids

6. Metals • Physical Properties of Metals: • Luster (shininess) • Good conductors of heat and electricity • Chemical Properties of Metals: • Easily lose electrons • Corrode easily. Corrosion is a gradual wearing away. (Example: silver tarnishing and iron rusting)

7. Nonmetals • Physical Properties of Nonmetals: • No luster (dull appearance) • Poor conductor of heat and electricity • Low melting point

8. Metalloids • Physical Properties of Metalloids: • Solids • Can be shiny or dull • Conduct heat and electricity better than nonmetals but not as well as metals

9. Physical & Chemical Properties • A compound is a substance formed when two or more elements are chemically joined. • Water, salt, and sugar are examples of compounds. • Letters, numbers, and symbols are used to represent elements and the number of elements in each compound. • Example: alcohol (C2H5OH), water (H2O),

10. Mixtures • Mixtures • Homogeneous mixtures are ones that have consistent properties. Think of them like a blended shake, which has the fruit cut so small and mixed up so that the shake has a specific consistency. • Heterogeneous mixtures have inconsistent and non-uniform composition, like a salad- it’s easy to see and separate the different vegetables.

11. Atoms • Atom • Tiny particles that compose most forms of matter • Simplest unit of an element • Smallest unit of matter

12. Atoms

13. Atoms • Atoms are made up of three subatomic particles: • Protons – positive charge located in the nucleus • Electrons – negative charge orbits around the nucleus • Neutrons – neutral charge located in the nucleus

14. APE MAN A=P=E M-A=N A = Atomic mass# P = # of Protons E = # of Electrons M = Mass # A = Atomic # N = # of Neutrons

15. Reading the Periodic Table Atomic Mass Atomic Number Name Symbol

16. Chemical Equation Coefficient 2 H2O2 2H2O + O2 Word Bank Coefficient Product Reactant Subscript Yield

17. Compound vs. Element 3C6H12O6C = _____ H = _____ O = _____ # of Atoms Compound Element

18. Balanced or Unbalanced  Na + O2 Na2O Na = O = Na = O =

19. Organic or Inorganic  Na + O2 Na2O Na = O = Na = O =

20. Matter & Energy

21. Matter & Energy