Atomic Theory

The building block of all matter is ...?
(Partikel penyusun dasar dari semua materi adalah ...?)

• Energy

• Atoms

• Electrons

• Compounds

The first person to propose a theory about an atom was ...?
(Orang yang pertama kali mengemukakan ide tentang atom?)

• Dalton

• Rutherford

• Democritus

• Chadwick

What contribution did John Dalton make to atomic theory?
(Apa kontribusi John Dalton dalam perkembangan teori atom?)

• Every atom was positively charged

• Every element consisted of one type of atom

• Atom had nuclei (nucleus)

• Atoms could be divided into smaller parts

What scientist is best known for his "Plum Pudding" model of the atom?

(Siapa peneliti yang terkenal dengan model atom "roti kismis"?)

• John Dalton

• E. Rutherford

• J.J Thomson

• Niels Bohr

How did J.J Thomson discover the electron?

(Bagaimana J.J Thomson menemukan elektron?)

• Cathode tube ray experiment

• Gold foil experiment

• Atomic spectra experiment

• Oil-drop experiment

After the experiment, J.J Thomson proposed that atom is a ... charged particle.

(Setelah melaksanakan eksperimennya, J.J Thomson menyatakan bahwa atom adalah partikel bermuatan ...)

• Positively

• Negatively

• Neutrally

Who carried out the gold foil experiment?
(Siapa yang melaksanakan percobaan lempeng emas?)

• J.J Thomson

• E. Rutherford

• Niels Bohr

• J. Chadwick

Rutherford's gold foil experiment provided evidence that ...?

(Eksperimen lempeng emas Rutherford membuktikan bahwa ...?)

• Negative and positive charges are spread evenly throughout the atom

• Alpha particles have a positive charge

• Gold is not a dense as previously thought

• There's a dense positively charged nucleus at the center of an atom

Simply, Rutherford's model of the atom is described as ...?
(Secara sederhana, model atom Rutherford digambarkan seperti ...?)

• 
• 
• 
• 

In the discovery of neutron, Aston found a tool named mass spectrometer that is used to ...?
(Aston menemukan spektrometer massa yang digunakan untuk ...?)

• Determine atomic mass

• Determine the particles in the nucleus

• Determine number of electron

• Determine electron orbital