9/8-9/9 - · PDF file9/8/2014 · Elements Quiz 5. Correct ... Mercury. Non-Metals....
Transcript of 9/8-9/9 - · PDF file9/8/2014 · Elements Quiz 5. Correct ... Mercury. Non-Metals....
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9/18-9/19Sci 8
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Assignment #8 Periodic Table part 1LO: To predict the properties of metals and nonmetals.EQ: What do you think are the properties of metals and nonmetals?
LEVEL ZERO VOICECATALYST (10 minutes, individual work):
1. Draw an atom with 7 protons and 5 neutrons. Label all of the parts.a. What is the atomic number of this atom?b. What is the atomic mass?c. Write the formal name. “Element name – atomic mass”
2. Draw a lithium atom. What makes this a lithium atom?3. What is the charge of a:
1. Boron with 6 electrons2. Carbon with 10 electrons3. Helium with 1 electron
AGENDA
1. Lecture
2. Group Predictions
3. Computer Seating Chart
4. Elements Quiz
5. Correct Quiz
HOMEWORK
1. Another Isotope/Calculation Worksheet
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Metals and Non-Metals
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Metals
Sodium
Mercury
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Non-Metals
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Property #1: State of Matter
• Is it a liquid, solid, or gas at room temperature (22 deg C)
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Property #2: Shiny or Dull?
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Property #3: Malleability and Ductility
• Malleable: can be stretched
• Ductile: can be bent
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Property #4: Conductivity
• Conductivity: how well it conducts electricity
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Bad Idea
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Property #5: Thermal Conductivity
• Thermal (heat) conductivity: how well heat flows through it
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Property #6: Melting Point
• The temperature that an element melts at
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Property #7: Does it react with Acids?
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Metalloids/Semi-metals
• Metalloids share properties of metals and non-metals
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Metalloids/Semi-metals
• Metalloids share properties of metals and non-metals
• EX: The metalloid Si is shiny like metals but brittle like non-metals
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Noble Gases
• Most elements like to bond (stick to) themselves or other elements• EX: water, oxygen, chlorine gas
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Noble Gases
• Most elements like to bond (stick to) themselves or other elements• EX: water, oxygen, chlorine gas
• NOBLE GASES don’t bond with other atoms• They are always found as single atoms
• EX: balloons are filled with He atoms