PLEASE HELP! 94 POINTS AND BRAINLIST PLZ PLZ

04.04 Using the Periodic Table Assignment
You are an Intergalactic CSI that investigates crime scenes between galaxies!
There has been a nuclear explosion on another planet.
Your mission is to match the forensic evidence from the scene to our Earth’s Periodic Table.
Let’s make sure that you have all the atomic information that you will need!



Part 1: Mission Preparation: Use the following word bank to complete the sentences accurately.

atomic mass protons column electrons atomic number neutrons row 11 12 23

A. The _______________ ___________________ of an element includes atomic number plus the number of neutrons.

B. The atomic number represents the number of _____________________ and ___________________ in an element.

C. Elements found in the same_____________________ have similar chemical properties.

D. An element with an atomic number of 11 and an atomic mass of 23 will have __________ neutrons total.



Part 2: Mission Activated

Use information you have learned to help you match the Galactic Element Clues to our Earth elements found in the Periodic Table below.

When you find a match, please type the galactic symbols (letter abbreviation) in the periodic table below, next to Earth’s element symbol.

Periodic Table
Group 1 Group 2 Group 13 Group 14 Group 15 Group 16 Group 17 Group 18
1
H/Gs
1.008

2
He/
4.003
3
Li/
7.941 4
Be/
9.012 5
B/
10.811 6
C
12.010 7
N/At
14.006 8
O/
15.999 9
F/
18.998 10
Ne/
20.179
11
Na/So
22.989 12
Mg/
24.305 13
Al/Lm
26.981 14
Si/
28.085 15
P/
30.973 16
S/
32.065 17
Cl/Ms
35.453 18
Ar/
39.948
19
K/
39.098 20
Ca/
40.078 Skip
21 - 30 31
Ga/
69.723 32
Ge/
72.64 33
As/
74.921 34
Se/
78.96 35
Br/
79.904 36
Kr/
83.8