Everything Science Grade 10

5.2 CHAPTER 5. THE PERIODIC TABLE

• Lithium (Li)


• Chlorine (Cl)


• Magnesium (Mg)


• Neon (Ne)
  
  
  • Oxygen (O)
  
  
  • Calcium (Ca)
  
  
  • Carbon (C)
  
  
  
  

Which of the elements listed above:

a. belongs to Group 1

b. is a halogen

c. is a noble gas

d. is an alkali metal

e. has an atomic number of 12

f. has four neutrons in the nucleus of its atoms

g. contains electrons in the 4th energy level

h. has all its energy orbitals full

i. will have chemical properties that are most similar

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(1.) 001r (2.) 001s (3.) 001t (4.) 001u

Activity: Inventing your own periodic table

You are the official chemist for the planet

Zog. You have discovered all the same

elements that we have here on Earth,

but you don’t have a periodic table.

The citizens of Zog want to know how

all these elements relate to each other.

How would you invent the periodic ta-

ble? Think about how you would organ-

ise the data that you have and what prop-

erties you would include. Do not simply

copy Mendeleev’s ideas, be creative and

come up with some of your own. Re-

search other forms of the periodic table

and make one that makes sense to you.

Present your ideas to your class.

Circular periodic table

Image from Wikimedia commons

102 Chemistry: Matter and materials