Physical Science Final Review
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1 Physical Science Final Review
2 Who is the Father of Atomic Theory?
3 Thomson s Experiment: In Thomson s model of the atom, the negative charges are scattered throughout an atom filled with a positively charged mass of matter. The plum pudding model
4 What did this experiment prove? Beam of Alpha-Particles were REPELED by Positive Charges in the nucleus
5 Atomic Theory: Who s Model of the Atom? Neils Bohr
6 Electron Cloud An is a visual model of the most likely locations for electrons in an atom. Physical Science Elements, Compounds, and Atoms An Orbital is a region of space around the nucleus where an electron is likely to be found. * An electron cloud is a good approximation of how electrons behave in their orbitals.
7 Atomic Structure Basics: Protons: positively charged particles, weighing 1 atomic mass unit (1.67x10-24 grams) and located in the nucleus. Neutrons: neutrally charged particles, weighing approximately 1 atomic mass unit and located in the nucleus. Electrons: negatively charged particles, weighing zero atomic mass units, located in orbitals of the energy levels found outside the atomic nucleus
8 Atomic Number: The number of protons in an atom determines what element it is. Add or subtract even one proton from an atom of any element and you no longer have the original element in any form. Now you have a different element! Play the Name the Atom Game at: /interactives/periodic/b asics_interactive.html
9 Periodic Table Basics: Essential Question: What are Horizontal Rows called? Answer: PERIODS
10 Electron Configuration The Period number is equal to the number of energy levels in an atom Remember: The number of electrons are equal to the number of protons in a neutral atom
11 What are Groups on the Periodic Table? Essential Question: Groups are also known as Families of Elements. They share chemical properties. WHY? Answer: They have the same number of outer shell electrons.
12 Electron Configuration For Groups IA VIII the group numbers are equal to the number of outer shell electrons or valence electrons Group IA has ONE valence electron Group IIA has TWO valence electrons; etc.
13 Name that GROUP: The Alkali Metals IA = one outer shell electrons therefore Oxidation state? +1
14 Name that GROUP: The Alkali Earth Metals IIA = two outer shell electrons Oxidation state? +2
15 Name that GROUP: The Noble Gases VIIIA = eight outer shell electrons (except Helium which has 2 but is FULL) therefore Oxidation state? NOT!
16 Name that GROUP: The HALOGENS The Salt Formers VIIA = SEVEN outer shell electrons therefore Oxidation state? -1
17 Name that GROUP: The Transition Metals B series = usually 2 or 3 outer shell electrons therefore Oxidation state? +2 or +3
18 Chemical Bonding: Three types of bonding Ionic Game: Ionic Bonding Covalent Metallic Bonding Animations and short clips AWESOME MOVIE ON BONDING 30 minutes long
19 Atomic Structure: How many neutrons in the following isotopes? Hydrogen 1 Helium 4 Lithium 6 Sodium 22
20 More Isotope stuff Mass Number Atomic Number A Z X Element Symbol 1 1 H 2 1 H (D) 3 1 H (T) U U
21 Nuclear Energy Essential Questions: Why is it worth the RISK?? Tremendous OUTPUT of ENERGY!! Fission or Fusion? Fission! Atoms of U-235 are split Use the link to see how Nuclear Fusion works:
22 Heat energy: Direction of Energy Flow? HOT toward COLD
23 States of Matter Watch what happens to molecules when heated by doing cool virtual experiments. Click on the icon below to get started:
24 Change of Phase FIRST DO THIS Temperature Experiment By Clicking Here! To Understand this Graph CLICK HERE
25 Chemical or Physical Change? Chemical Change New substances formed with new properties Examples: Rusting Gas forming during a reaction (bubbles) A precipitant forming during a reaction Physical Change No new substances formed Examples: Ice melting Water evaporating Dry ice subliming into Carbon dioxide Salt or sugar dissolving in water
26 Types of Matter: Review basics about classifying matter by following the link below. Watch the video clips! Make sure you scroll all the way down to the chart to test your knowledge!
27 Where is Magnetism Concentrated? Magnetism is strongest at the POLES
28 Magnetic Domains : Not aligned: Magnetic domains are ALIGNED in a permanent magnet :
29 What happens if you cut a magnet in half?
30 Electricity and Magnetism:
31 Get in line!
32 Electromagnets: What Happens if you increase the number of coils in an electromagnet? The magnet gets STRONGER!
33 Induction charging of two metal spheres:
34
35 Potential Energy: PE grav = mass g height Too hard to remember? Use the Reference Table!
36 Answer key: A: PE = 40 J (since the same mass is elevated to 4/5-ths height of the top stair) B: PE = 30 J (since the same mass is elevated to 3/5-ths height of the top stair) C: PE = 20 J (since the same mass is elevated to 2/5-ths height of the top stair) D: PE = 10 J (since the same mass is elevated to 1/5-ths height of the top stair) E and F: PE = 0 J (since the same mass is at the same zero height position as shown for the bottom stair Note since PE grav = m * g h Doubling of the height will result in a doubling of the gravitational potential energy. A tripling of the height will result in a tripling of the gravitational potential energy.
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