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Substance T exists as a liquid at temperature of 105 °C. Which of the following is the probable melting point and boiling point of substance T?
Bahan T wujud sebagai cecair pada suhu 105 °C. Manakah antara berikut mungkin takat lebur dan takat didih bahan T?
The table below shows the number of protons for elements P, Q, R, S and T.
Jadual 3 menunjukkan bilangan proton bagi unsur-unsur P, Q, R, S and T.
Element Unsur |
P | Q | R | S | T |
Number of protons Bilangan proton |
3 | 8 | 12 | 11 | 20 |
Which of the following pair of elements have the same number of valence electrons in their atom?
Manakah antara pasantangn unsur-unsur berikut mempunyai bilangan elektron valens yang sama di dalam atomnya?
Table below shows the number of neutrons, protons and electrons of particles X and Y.
Jadual di bawah menunjukkan bilangan neutron , proton dan elektron bagi zarah X dan Y.
Particle Zarah |
Number of neutrons Bilangan neutron |
Number of proton Bilangan proton |
Number of electrons Bilangan elektron |
X | 12 | 12 | 12 |
Y | 12 | 12 | 10 |
TABLE 6
Which of the following is true about X and Y?
Manakah antara berikut benar tentang X dan Y?
The nucleus of an atom contains
Nukleus sesuatu atom mengandungi
The table below shows the melting point and boiling points of five compounds P, Q, R, S and
T. Which substance exists as a liquid at room temperature?
Jadual di bawah menunjukkan takat lebur dan takat didih bagi lima sebatian P, Q, R, S dan T. Antara bahan
berikut yang manakah wujud dalam keadaan cecair pada suhu bilik?
Substance Bahan |
Melting point(oC) Takat lebur(0C) |
Boiling point(oC) Takat didih(oC) |
P | -185 | -18 |
Q | -40 | 45 |
R | 10 | 500 |
S | 45 | 900 |
T | 800 | 3000 |
Table 2
Jadual 2
Table below describes the structures of four particles.
Jadual di bawah menunjukkan struktur bagi empat zarah.
Particle Zarah |
O | O2- | Na | Na+ |
Number of protons Bilangan proton |
8 | 8 | 11 | 11 |
Number of neutrons Bilangan neutron |
8 | 8 | Y | 12 |
Number of electrons Bilangan elektron |
8 | X | 11 | Z |
What are the correct values of X, Y and Z?
Apakah nilai yang betul bagi X, Y dan Z?