Konstruk

KonstrukNo.

TajukAras KesukaranJenis Item

Pemikiran/PengingatanStimulusJawapanKod

Penulis

7(a)Table 7 shows the electron arrangement diagram of compound X and Y.

Jadual 7 menunjukkan gambar rajah susunan elektron bagi sebatian X dan Y.

Compound

Sebatian

Electron arrangement diagramGambar rajah susunan elektron X

Y

Table 7Jadual 7

(i)Based on Table 7, determine the types of compound X and Y.

Berdasarkan Jadual 7, tentukan jenis sebatian X dan Y.

Compound X: ___________________________________________________Sebatian X

Compound Y: ___________________________________________________Sebatian Y

[2 marks]

[2 markah]

(ii)Compound X and compound Y have different physical properties.

Choose one of the physical properties that can differentiate between compound X and Y.

Explain the difference in the physical properties between compound X and Y.

Sebatian X dan sebatian Y mempunyai sifat fizik yang berbeza.

Pilih satu sifat fizik tersebut yang dapat membezakan antara sebatian X dan Y.

Terangkan perbezaan sifat fizik tersebut di antara sebatian X dan Y._______________________________________________________________

_______________________________________________________________

[2 marks]

[2 markah]

(b)Sodium phosphate reacts with calcium chloride and form insoluble white solid form. This reaction describe by following equation.

Natrium fosfat bertindak balas dengan kalsium klorida dan menghasilkan pepejal putih yang tak larut. Tindak balas ini adalah seperti persamaan berikut.2Na3PO4 (aq) + 3CaCl2 (aq) ( 6NaCl (aq) + Ca3(PO4)2 (s)

2Na3PO4 (ak) + 3CaCl2 (ak) ( 6NaCl (ak) + Ca3(PO4)2 (p)

(i)Write the complete ionic equation for the reaction.

Tuliskan persamaan ionik penuh bagi tindak balas tersebut.

________________________________________________________________

________________________________________________________________

[2 marks]

[2 markah]

(ii)3.28 g of sodium phosphate is used in this reaction. Calculate the mass of calcium phosphate produce.

[Relative atomic mass: O = 16, Na = 23, P = 31, Ca = 40]

3.28 g natrium fosfat digunakan dalam tindak balas ini. Hitungkan jisim kalsium fosfat yang terhasil.

[Jisim atom relatif: O = 16, Na = 23, P = 31, Ca = 40][4 marks]

[4 markah]

7.c) Table Salt

Water

Garam Dapur Air

The pictures above show a table salt and a glass of water.

Gambar di atas menunjukkan garam dapur dan gelas berisi air.

(i)Name the type of compound for two substance below whether ionic

compound or covalent compound.

Namakan jenis sebatian bagi dua bahan di bawah sama ada sebatian ionik atau sebatian kovalen. [1 mark/1 markah]Substance

Bahan

Type of compound

Jenis Sebatian

Table Salt

Garam Dapur

Water

Air

(ii)By giving reason, compare the ionic compound and covalent compound stated in c (i) using the following physical properties :

Dengan memberi sebab, bandingkan sebatian ionik dan sebatian kovalen yang dinyatakan dalam c (i) menggunakan sifat-sifat fizikal berikut : The melting and boiling points / Takat lebur dan takat didih The solubility in water / Keterlarutan di dalam air The electrical conductivity / Kekonduksian elekrtrik [9 marks/9 markah]

lanKeakuranKetepatanKejelasanKesesuaian

KurikulumSpesifikasiPeluangKonstrukTajukStimulusStemOpsyenBahasaAras Kesukaran

PentingAdil

PAGE