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Pre – AP Biology Chemistry of Life (2.1) Part 1. Element Chlorine (Cl)

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Presentation on theme: "Pre – AP Biology Chemistry of Life (2.1) Part 1. Element Chlorine (Cl)"— Presentation transcript:

1 Pre – AP Biology Chemistry of Life (2.1) Part 1

2 Element Chlorine (Cl)

3 Compound Sodium (Na) + Chlorine (Cl) salt (NaCl)

4 CHNOPS = Life

5 Atoms & Subatomic particles

6 Isotopes Differing numbers of neutrons

7 Ions Differing number of electrons

8 Atoms found on a Periodic Table See the energy levels of electrons?

9 Electron orbitals Electrons circling the nucleus

10 Molecule: Same element

11 Molecule: Different elements

12 Periodic Table of Elements Atomic Mass is shown on the bottom of each square Atomic Number is shown in the upper left corner

13 Elemental Oxygen How many protons in Oxygenatoms? How many neutrons in Oxygen atoms normally?

14 Radioactive Isotopes

15 Pre – AP Biology Chemistry of Life Part 2

16 Potential Energy Energy of Position Which diver has more potential energy?

17 Kinetic Energy Energy of Movement

18 Potential stored energy of the electrons in the bond between Oxygen (O) and Hydrogen(H)

19 The cloud is created by moving (kinetic) electrons

20 Periodic Table of Elements Atomic Mass is shown on the bottom of each square Atomic Number is shown in the upper left corner

21 Period on a periodic table Period run horizontally, like sentences

22 Families on a periodic table Families run vertically, like columns

23 Covalent Bonds See the shared electrons between Carbon(C) and Hydrogen (H)?

24 Polar covalent bonding of water molecule See how each end(pole) has an electrical charge?

25 Structural Formula

26 Molecular Formula CH 4 Methane gas 1 atom of Carbon & 4 atoms of Hydrogen

27 Ionic bonding See the electron being lost from Na and gained by Cl?

28 Ionic Compound Salt (NaCl)

29 Hydrogen Bonding See the positive Hydrogen (H) attracted to the negative Nitrogen (N)?

30 Chemical Reactions


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