Istilah Kimia Ting. 4 Flashcards

1
Q

Takat Lebur

A

Suhu malar apabila suatu bahan berubah daripada pepejal menjadi cecair pada tekanan tertentu

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2
Q

Takat Beku

A

Suhu malar apabila suatu bahan berubah daripada cecair menjadi pepejal pada tekanan tertentu

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3
Q

Nombor Proton

A

Bilangan proton dalam nukleus suatu atom

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4
Q

Nombor Nukleon

A

Jumlah bilangan proton dan neutron dalam nukleus suatu atom

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5
Q

Isotop

A

Atom-atom unsur yang sama mempunyai bilangan proton yang sama tetapi bilangan neutron yang berbeza

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6
Q

Jisim Atom Relatif

A

Jisim purata satu atom unsur berbanding dengan 1/12 kali jisim satu atom karbon-12

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7
Q

Jisim Molekul Relatif

A

Jisim purata satu molekul berbanding dengan 1/12 kali jisim satu atom karbon-12

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8
Q

1 Mol

A

Kuantiti suatu bahan yang mengandungi 6.02 x 10^23 zarah bahan itu.

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9
Q

Jisim Molar

A

Jisim bagi 1 mol suatu bahan. Unit: g mol-1

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10
Q

Isi padu Molar

A

Isi padu yang ditempati oleh 1 mol gas. Unit: mol dm-3

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11
Q

Formula Empirik

A

Formula kimia yang menunjukkan nisbah paling ringkas bilangan atom setiap jenis unsur dalam suatu sebatian

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12
Q

Formula Molekul

A

Formula kimia yang menunjukkan bilangan atom sebenar setiap jenis unsur di dalam satu molekul suatu sebatian

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13
Q

Anion

A

Ion yang bercas negatif

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14
Q

Kation

A

Ion yang berzarah positif

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15
Q

Elektron valens

A

Elektron yang menempati petala paling luar suatu atom

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16
Q

Kumpulan

A

Lajur menegak dalam Jadual Berkala Unsur

17
Q

Kala

A

Baris mengufuk dalam Jadual Berkala Unsur