Flashcards
AS
Flashcards do conjunto (12)
- 1What determines the direction of deflection?Neutrons: neutral charge, not attracted to charged electrodes
Protons: positively charged->deflected to negative electrode
Electrons: Negatively charged, deflected to positive electrode - 2What determines the angle of deflection?[charge]/mass
-greater ratio->greater deflection - 3Is protons or electrons deflected to a greater extent? Why?-Electrons
-Lighter - 4How is the angle of deflection useful?Similar behaviours of charged particles->relative abundance of isotopes
- 5Why does the subatomic particles behave differently in electric field? In what ways?-different masses & different charges
-Direction of deflection & Angle of deflection - 6Describe the arrangement of the subatomic particles in an atom1. Positively charged nucleus: contain nucleons ( protons & neutrons)->most of the mass
2. Orbitals around nucleus: contain negatively charged electrons->negligible mass - 7Define proton (atomic) numberNumber of protons in the nucleus of atom
- 8Define nucleon (mass) numberTotal number of protons and neutrons in the nucleus of the atom
- 9What does the proton (atomic) number do?-defines element
-determine identity of element - 10Does hydrogen contain neutrons?No.
no. of protons=no.of electrons=1
nucleon no.=1
no. of neutron=1-1=0 - 11What does it mean to be isoelectronic, isotopic & isotonicIsoelectronic: atoms/ions : same number of electrons
Isotopic: Atoms/Ions: same number of protons
Isotonic: Atoms/Ion: same number of neutrons - 12Define isotopes-same proton (atomic) number
-different nucleon number
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- FlashCards sobre AS, criado por Tan JiaXin em 06-03-2017.
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- Tan JiaXin
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