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Atoms


What is pHun Reactions?

Glue in your learning outcomes sheet!


Ngā Whāinga Ako

  1. Use diagrams to represent the arrangement of protons, neutrons and electrons in atoms.
  2. Use the periodic table to find proton, neutron and electron numbers.

Write the date and ngā whāinga ako in your book


Atoms


Source


Source

Glue in your periodic table at the front/back of your book so you can always find it!


Elements


Akoranga 2 Mahi Tuatahi


  1. Copy this diagram and fill in the missing labels
  2. What element is this?
  3. What is the symbol of this element?
  4. How many protons exist in the nucleus of this atom?
  5. How many electrons exist in the shells?

Source


  1. What element has symbol K?
  2. What element has symbol Be?
  3. What is the symbol of aluminium?
  4. What is the symbol of argon?
  5. How many protons does carbon have?

Ngā Whāinga Ako

  1. Can use the periodic table to find proton, neutron & electron numbers
  2. Can define atomic and mass number

Write the date and ngā whāinga ako in your book


Atomic Number

The number of protons in the nucleus of the atom. Each element has a different number of protons.


Mass Number

The number of protons and neutrons in the nucleus.

Your periodic table gives an average mass number. You should round it to the nearest whole number.


Pātai: Sodium

  1. How many protons does sodium have in its nucleus?
  2. How many neutrons does sodium have in its nucleus?
  3. How many electrons orbit around sodium?
  4. Why is there that many electrons?


Whakatika

  1. __How many protons does sodium have in its nucleus?__
    11
  2. __How many neutrons does sodium have in its nucleus?__
    $23-11=12$
  3. __How many electrons orbit around sodium?__
    11
  4. __Why is there that many electrons?__
    Because the number of protons and electrons are the same in neutral atoms.


Pātai: Phosphorous

  1. How many protons does phosphorous have in its nucleus?
  2. How many neutrons does phosphorous have in its nucleus?
  3. How many electrons orbit around phosphorous?
  4. Why is there that many electrons?


Whakatika

  1. __How many protons does phosphorous have in its nucleus?__
    15
  2. __How many neutrons does phosphorous have in its nucleus?__
    $31-15=16$
  3. __How many electrons orbit around phosphorous?__
    15
  4. __Why is there that many electrons?__
    Because the number of protons and electrons are the same in neutral atoms.


Tākaro/Game: Atom Battleships


Ngohe/Task: Atoms