1. 8th grade warm ups for week of 10-16-17

2. Monday (Mon.) 10-16-17 WU: 1:What does the word periodic mean?
Ans: The word periodic means in a regular repeating pattern.
2: Go to next slide

3. Monday (Mon.) 10-16-17 2: Copy and fill in the missing information: 11
Atomic Number:
Name of Element:
Atomic Symbol:
# of Protons:
# of Neutrons:
# of Electrons:
Atomic Mass:
Draw the Energy Levels 11 Na
Sodium
22.990

4. Tuesday (Tues.)
WU: Who is Mendeleev and what did he discover about the elements?
Ans: 1: Mendeleev was a Russian scientist who discovered a set of patterns and a set of properties, both chemical and physical, that applied to all elements.
2:To find these patterns he used the melting point, density, color, atomic mass, and chemical bonds.
3: As he arranged the elements based on their properties the elements lined up in order of increasing atomic mass.

5. Wednesday (Wed.)
WU: Describe 2 things in the modern periodic table that are different from Mendeleev’s periodic table.
Ans: In the modern periodic table, new elements have been added as they have been discovered and the elements are arranged by their atomic number.

6. Thursday (Thurs.)
WU: List the four ways that the periodic table is set up.
Ans:
1: by rows also known as periods
2: by columns also known as families
3: By state of matter
4: Type of element(metal, non-metal, metalloid, and noble gases)

7. Friday (Fri.)
Copy the periodic square and then label the 4 kinds of information about an element that can be found in a periodic square on the periodic table. Next, list the number of protons, electrons, and neutrons.
Finally, draw the energy levels
atomic number:7
atomic symbol: N
name of the element: Nitrogen
atomic mass:
***next slide

8. Friday (Fri.)
# of Protons: 7 # of Neutrons: 7 # of Electrons: 7