9/18-9/19Sci 8

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

Metals and Non-Metals

Metals

Sodium

Mercury

Non-Metals

Property #1: State of Matter

• Is it a liquid, solid, or gas at room temperature (22 deg C)

Property #2: Shiny or Dull?

Property #3: Malleability and Ductility

• Malleable: can be stretched

• Ductile: can be bent

Property #4: Conductivity

• Conductivity: how well it conducts electricity

Bad Idea

Property #5: Thermal Conductivity

• Thermal (heat) conductivity: how well heat flows through it

Property #6: Melting Point

• The temperature that an element melts at

Property #7: Does it react with Acids?

Metalloids/Semi-metals

• Metalloids share properties of metals and non-metals

Metalloids/Semi-metals

• Metalloids share properties of metals and non-metals

• EX: The metalloid Si is shiny like metals but brittle like non-metals

Noble Gases

• Most elements like to bond (stick to) themselves or other elements• EX: water, oxygen, chlorine gas

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