Investigative Science 9 – Ms. Kohler                       Date: 10/20/17 Unit: Chemistry                    Learning Goal:Predict properties of elements and compounds using trends of the periodic table and know how energy can alter matter chemically or physically. Investigative Science 9 – Ms. Kohler Warm Up: How many electrons can be held in each orbital/energy level of an atom? It’s Ms. Kohler’s birthday! Make it a great one by getting 100% on your pop-quiz! YES YOU HAVE A REFLECTION TODAY!

Investigative Science 9 – Ms. Kohler                       Date: 10/20/17 Unit: Chemistry                    Learning Goal:Predict properties of elements and compounds using trends of the periodic table and know how energy can alter matter chemically or physically. Investigative Science 9 – Ms. Kohler Elements are made up of atoms! For example… Hydrogen is the first element on the periodic table and it has the simplest structure of all known elements. Hydrogen contains one proton and one electron. These cancel each other out, meaning it has no electrical charge. Electrons fill the orbitals closest to the nucleus first. So the single electron in a hydrogen atom is found in the first orbital. Remember that energy level, orbitals, energy shells, etc. are all the same thing! How many more electrons can fit in the first orbital of this hydrogen atom?

Investigative Science 9 – Ms. Kohler                       Date: 10/20/17 Unit: Chemistry                    Learning Goal:Predict properties of elements and compounds using trends of the periodic table and know how energy can alter matter chemically or physically. Investigative Science 9 – Ms. Kohler Elements are made up of atoms! For example… Carbon is the sixth element on the periodic table and it is one of the most commonly occurring elements. Carbon contains 6 protons, 6 neutrons, and 6 electrons. Remember that the number of protons an atom has, is it’s atomic number this is equal to the number of electrons. Remember that the ‘mass number’ or ‘atomic mass’ of an atom is approximately equal to the number of protons plus the number of neutrons. How many more electrons can fit in the second orbital of this carbon atom?

Investigative Science 9 – Ms. Kohler                       Date: 10/20/17 Unit: Chemistry                    Learning Goal:Predict properties of elements and compounds using trends of the periodic table and know how energy can alter matter chemically or physically. Investigative Science 9 – Ms. Kohler Elements are made up of atoms! For example… This is the chemical element Xenon. It’s one of the six noble gasses. How many protons does it have? How many Electrons? How many neutrons? What is the mass number? 54 54 77 ~131 Count how many orbitals the electrons are occupying, how many do you think there are? 11 orbitals

Investigative Science 9 – Ms. Kohler                       Date: 10/20/17 Unit: Chemistry                    Learning Goal:Predict properties of elements and compounds using trends of the periodic table and know how energy can alter matter chemically or physically.

Investigative Science 9 – Ms. Kohler                       Date: 10/20/17 Unit: Chemistry                    Learning Goal:Predict properties of elements and compounds using trends of the periodic table and know how energy can alter matter chemically or physically. Investigative Science 9 – Ms. Kohler Elemental Structure and the Periodic Table: 1. What 3 sub-atomic particles make up the atom? 2. The atomic number tells us what 2 things? 3. What do the mass number of an element tell us? 4. What are the charges of the 3 sub atomic particles? 5. What do the numbers 2, 8, 8, and 18 represent? 6. What are valence electrons? 7. What makes an atom “happy”, stable or non-reactive? 8. What makes atoms “angry” or highly reactive.

Investigative Science 9 – Ms. Kohler                       Date: 10/20/17 Unit: Chemistry                    Learning Goal:Predict properties of elements and compounds using trends of the periodic table and know how energy can alter matter chemically or physically. Investigative Science 9 – Ms. Kohler Reflection: What is an element? What is the periodic table? YES YOU HAVE A REFLECTION TODAY!