https://padlet.com/fayyaz_ahmed_vuec/amicls7 Homework activity for Class 7 en-us 2017-02-24 10:03:36 UTC 2025-11-24 15:17:47 UTC hello@padlet.com https://padlet-assets.s3.amazonaws.com/icons/Planets.png fayyaz_ahmed_vuec https://padlet.com/fayyaz_ahmed_vuec/amicls7/wish/155981578 Dear Class 7 students,
Can you describe the atomic structures of the following elements.
1. Sodium (Na)
2. Fluorine (F)
3. Iron (Fe)
4. Calcium (Ca)

Atomic Structure means that you have to tell how many electrons, protons and neutrons does this atom have?
You need a periodic table to complete your work. Here it is attached.

]]> 2017-02-24 10:08:38 UTC https://padlet.com/fayyaz_ahmed_vuec/amicls7/wish/155981578 https://padlet.com/fayyaz_ahmed_vuec/amicls7/wish/156050265 Sodium(Na)
11=Electrons(E)
11=Protons(P)
12=Neutron(N)
Fluorine(F)
9=E
9=P
10=N
Iron(Fe)
26=E
26=P
30=N
Calcium(Ca)
20=E
20=P
20=N

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]]> 2017-02-25 07:36:06 UTC https://padlet.com/fayyaz_ahmed_vuec/amicls7/wish/156170838 getray223344 https://padlet.com/fayyaz_ahmed_vuec/amicls7/wish/156449272
Sodium(Na)
11=Electrons(E)
11=Protons(P)
12=Neutron(N)
Fluorine(F)
9=E
9=P
10=N
Iron(Fe)
26=E
26=P
30=N
Calcium(Ca)
20=E
20=P
20=N]]> 2017-02-27 15:47:48 UTC https://padlet.com/fayyaz_ahmed_vuec/amicls7/wish/156449272 getray223344 https://padlet.com/fayyaz_ahmed_vuec/amicls7/wish/156451274 Abdullah Mehmood, your answer is irrelevant to my question. Please review it again.]]> 2017-02-27 15:52:04 UTC https://padlet.com/fayyaz_ahmed_vuec/amicls7/wish/156451274 haiderryk https://padlet.com/fayyaz_ahmed_vuec/amicls7/wish/157286506 Q6: a)
Ans: 12
b)
Ans: Neutrons
c) 
Ans: i) Magnesium ion, Mg2+
        ii) Oxide ion, O2-
Q7: a)
Ans: Krypton, Neon, Argon, Xenon.
b)
Ans: Hydrogen, 2 atoms; Nitrogen, 2 atoms; and Oxygen, 2 atoms
c)
Ans: Carbon dioxide, 1atom of carbon and 2atoms of oxygen;
  Methane, 1atom of carbon and 4atoms of hydrogen.]]> 2017-03-02 11:54:29 UTC https://padlet.com/fayyaz_ahmed_vuec/amicls7/wish/157286506 https://padlet.com/fayyaz_ahmed_vuec/amicls7/wish/157291231 Q6=
A)12
B)Neutron
C)1)Magnesium ion,Mg2+
  2)Oxygen ion,O2-
Q7)
A)Argon,Neon,Xenon and Krypton
B)Nitrogen 2 atoms,Oxygen 2 atoms and Hydrogen 2 atoms.
C)Carbon dioxide 2 atom of oxygen 1 atom of carbon, 
Methane 1 atom of carbon and 4 atom of hydrogen.]]> 2017-03-02 12:19:14 UTC https://padlet.com/fayyaz_ahmed_vuec/amicls7/wish/157291231 https://padlet.com/fayyaz_ahmed_vuec/amicls7/wish/157517795


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]]> 2017-03-03 01:42:52 UTC https://padlet.com/fayyaz_ahmed_vuec/amicls7/wish/157518015 https://padlet.com/fayyaz_ahmed_vuec/amicls7/wish/157519087

J]]> 2017-03-03 01:51:23 UTC https://padlet.com/fayyaz_ahmed_vuec/amicls7/wish/157519087 https://padlet.com/fayyaz_ahmed_vuec/amicls7/wish/157823604 1. Sodium (Na)
   sodium has 11 protons , 11 electrons, 12 neutrons
2. Fluorine (F)
nine electrons, nine protons, Number of Neutrons | 10
3. Iron (Fe)
Atomic Mass | 55.845 atomic mass units
Number of Protons | 26
Number of Neutrons | 30
Number of Electrons | 26
4. Calcium (Ca)
Atomic Mass | 40.078 atomic mass units
Number of Protons | 20
Number of Neutrons | 20
Number of Electrons | 20]]> 2017-03-05 08:22:35 UTC https://padlet.com/fayyaz_ahmed_vuec/amicls7/wish/157823604 https://padlet.com/fayyaz_ahmed_vuec/amicls7/wish/157823909 Q6a: protons=12, electrons=12.    b:neutrons and nucleus. c:1) 2 Mg + O₂ 2 MgO
Q7a) krypton, neon, argon, xenon. b) , nitrogen 2 atoms, atoms, oxygen 2 atoms, hydrogen 2 atoms.
c)carbon dioxide 2 atoms of oxygen and 1 atom of carbon.
methane 1 atom of carbon and 4 atoms of hydrogen
 ]]> 2017-03-05 08:31:59 UTC https://padlet.com/fayyaz_ahmed_vuec/amicls7/wish/157823909 https://padlet.com/fayyaz_ahmed_vuec/amicls7/wish/166125051 HOME WORK BY MUHAMMAD ABDULLAH(PREFECT)
Q1's answer:   1:-GAS
                                       It is a fuel. We use it in our daily lives for cooking
 food. We use it for cooking because it is flammable and has energy to bake or cook.
2:-wood
                Wood is also a fuel. Wood has a lot of uses. It is also used for cooking because it can catch fire, it is used to get warm in winter and is used in power companies as a fuel to run the turbine.
3:-crude oil
 It is an entirely used fuel. It has various uses. It is used in vehicles, in generators, in motors and some other machinery.

Q2's answer: Sarah's investigation is incorrect because it is not a fair test. She should keep only one thing change, but she changed 2 things.

Q3's answer: Crude oil and natural gas: Millions of years ago, marine plants and animals died and settled on the sea floor. The rivers that entered the sea deposited their load and that load made layers on them. Bacteria and fungi decomposed it and it became crude oil and natural gas.
Coal: The energy in coal comes from energy that was stored in giant plants that lived hundreds of millions of years ago in swamp forests, even before the dinosaurs! When these giant plants and ferns died, they formed layers at the bottom of the swamps. Water and dirt began to pile up on top of the dead plant remains.




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