hello guys! welcome to kem korner!



Hello guys! Welcome to KEM KORNER!

This page, I hope, will help you obtain a deeper understanding and appreciation of basic and not-so-basic chemistry concepts. For those looking for entertainment, there will be bits of that here although I'm not so sure yet how I'll go about this "entertainment" thing. But I assure you that this blog will be filled with links, downloadables and test-yourself questions that will help you, in some way, improve your understanding of the world of chemistry.

Suggestions, contributions and reactions, violent or otherwise, are also welcome... :)


Tuesday, September 19, 2017

To A5, A6, A7 and A11

Pls. answer the following in your notebooks.

1.  What is an atomic number? a mass number?
2.  How are the atomic and mass numbers of elements/ions used to identify the number of protons, electrons and neutrons?
3.  Complete the following table.
page1image4048 page1image4208
Name of Element
Element Symbol
page1image8784
Mass Number
Atomic Number
page1image11136
Protons
page1image12360
Neutrons
Electrons
Boron
B
11
5
page1image18856
5
6
5
Sodium
23
11
page1image27632 page1image28536
Y
89
39
Copper
29
page1image37928
35
Tc
98
page1image44592
page1image45352
43
page1image47128
page1image48072
Pb
207
Thallium
page1image54464
204
81
page1image56520
page1image57288
H
page1image60512
page1image61664
page1image62440
0
Carbon
page1image66976
12
page1image67904
page1image69080 page1image69984 page1image70448 page1image70928
N
7
Ba
page1image78168 page1image78648 page1image79824 page1image80728 page1image81192 page1image81672
56
Calcium
Si
14
Argon
18
Mg
12
12

No comments:

Post a Comment