Science classroom


Welcome to physical science classroom with Ms. Fujii. We will explore a lot of exciting aspects of chemistry. Have fun!

Have you ever change your mind because your prediction was not the same to what happened? You are going to see that how the scientist change the ideas about atom over time. Good luck with your work!



Activity: Create a poster about one of his publications besides the Daltons atomic theory.

  •  A poster should be written in the paper distributed in the class.
  • It should be included the title, time, references, contents, contribution to society now, at least two pictures.(You can search the detail online.)

(1)Watch the video and take some notes to obtain ideas

(2)answer chapter 6-1 questions.

(3)Extensions(You can play games!!)

(1)The history of atomic theory(about 10 min)
   Focus on those points:

  • Derive of name of the atom
  • Three parts of atomic theory
  • How to discover electrons(JJ Thomson/Rutherford)
  • The structure of atoms
  • The relationship between energy level and atoms
  • The size of atoms


(2)Chapter 6-1 questions
Development of the Atomic Theory
You may answer those questions about 40 mins. You should go back to the video if you are not sure your answers. Also you are allowed to search online resources from my website and other.

Level 1: Vocabulary 
 1) What is the smallest unit of an element. (the number of letters) (plural)
    __ __ __ __ __(5)

  2)What charge dose a particle has....(Positive/Negative/Neutral)
     a) Protons      ___________   
     b) Electrons    ___________
     c) Neutrons    ___________

  3) What is a region around the nucleus of an atom where electrons are likely to found?
     __ __ __ __ __ __ __ __   __ __ __ __ __ (13)

  4) What is atom's central region, which made up of protons and neutrons?
    __ __ __ __ __ __ __(7)

  5) Each electron has a definite ______ based on its location around the nucleus.
   __ __ __ __ __ __(6)

Level 2 : Multiple choice
   1)Daltons atomic theory
     a)All substances are made of atoms. Atoms are small particles that can be created, divided or destroyed.
     b)Atoms of the same element are exactly alike, and atoms of different elements are different.
     c)Atoms join with other atoms to make new substances.

  2)Thomson's cathode ray tube experiment states that the beam has electrons because___________.
    a) opposite charge attracted.
    b) different color beam show up.
    c) beam behave like waves.

  3)Thomson's proposed that electrons are located throughout an atom___________________.
    a)like plums in a pudding
    b)like cheese cakes
    c)like macarons

  4)Rutherford's gold-foil experiment discovers that a few particles ______________________.
    a) were pass through the gold in a strait line.
    b) were distribute evenly.
    c) were deflected from a straight path.

  5)Bohr proposed that electrons move around the nucleus ___________
     a) gradually 
     b) in definite paths
     c) faster than he thought

  6)The ratio of the diameter of a nucleus to its atom 


Level 3: Free response
   1)Write one paragraph about atom by using the words: proton, electron, neutron, dalton theory, energy level and element

   2)How Dalton developed the atomic theory from the one Democritus states?

   3)How Rutherford refined Thomson's the plum-pudding model?

   4)What about Bohr's atomic theory was partially correct and was also refined by other scientist?


Level 4: Challenge
  1)What hypothesis will you make when you determine energy levels?

  2)What would happen to a stable nucleus in which number of neutrons suddenly decreased?

The end.


The atoms song(Next chapter)
    Use this song to memorize kinds of elements and have fun!


★Play games and have fun!!


Elements and atoms(Next chapter)
You may prepare for the next chapter. 

  • What element are you familiar with the most?
  • What element can you eat?
  • What element can you use for school supply?




1) Watch the video and do preparation activity "Dalton's publications". You search the detail to create a poster.

2)Watch the videos I attached on task page and take notes focusing on those points written.

3)  Answer the chapter 6-1 questions by referring your notes. If you cannot answer them, go back to watch the video to gather information you needed.

3) Play a game and try to get full score on evaluation page.



You might enjoy the videos and the games. In the next class, please submit your poster and worksheets. 

You will be graded 

Level1: 10 points(2 points each)
Level2: 30 points(5 points each)
Level3: 40 points(10 points each)
Level4: 20 points You will be graded on scientifically creativity, possibility, consideration and so on. 

Total points

90-100 A
80-90   B
70-80   C
60-70   D

Preparation will be extra credits. Your effort to the poster will be considered.