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Chemicals for Consumers/Bahan Kimia untuk Pengguna

Authored by Muhammad Zainal

Chemistry

5th Grade

Used 18+ times

Chemicals for Consumers/Bahan Kimia untuk Pengguna
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22 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Pernyataan yang manakah tidak benar tentang sabun dan detergen?

Which of the following statement are incorrect about soap and detergent?

Sabun dan detergen diperbuat daripada minyak sayuran

Soap and detergen produced from vegetable oil

Sabun membentuk kekat dalam air yang mengandungi ion magnesium dan kalsium manakala detergen tidak membentuk kekat dalam air yang sama.

Soap forms scum in water containing magnesium and calcium ions while detergent do not.

Kedua-duanya mempunyai kepala berion larut dalam air dan ekor hidrokarbon larut dalam gris.

Both have ionic head dissolves in water and hydrocarbon tail dissolves in grease.

Sabun mempunyai kepala ion karboksilat manakala detergen mempunyai kepala ion sulfonat.

Soap has ionic head of carboxylate while detergent has ionic head of suphonate.

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Apabila sebatian Y dihidrolisiskan natrium hidroksida, sabun gliserol terbentuk. Apakah homolog Y?

When compound Y is hydrolysed by sodium hydroxide, soap and glycerol formed. Which homologous series does Y belong to?

Alkohol

Alcohol

Alkana

Alkane

Asid karboksilik

Carboxylic acid

Ester

Ester

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Apakah nama proses yang digunakan untuk menghasilkan sabun?

What is the name of the process used to produce soap?

Saponifikasi

Saponification

Sulfonifikasi

Sulphonation

Pendehidratan

Dehydration

Penghidrogenan

Hydrogenation

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Apabila gris dikelilingi oleh molekul sabun, gris akan terpecahkepada bahagian yang lebih kecil dan termendak dalam air. Apakah fungsj sabun dalam proses ini?

When grease is surrounded by soap molecules, the grease breaks into smaller parts that remain suspended in water.

What is the function of soap in this process?

Pengemulsi

Emulsifier

Agen penghidratan

Hydrating agent

Agen pembasahan

Wetting agent

Agen pengoksidaan

Oxidising agent

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Media Image

Rajah 1 menunjukkan struktur bagi molekul sabun. Antara yang berikut, yang manakah benar tentang struktur are molekul sabun?

Diagram 1 shows the structure of a soap molecule.

Bahagian A ialah bahagian hidrofilik molekul sabun yang larut di dalam air.

Part A is the hydrophilic part of soap molecule that dissolves in water.

Bahagian B ialah bahagian hidrofobik molekul sabun yang larut dalam gris.

Part B is the hydrophobic part of soap molecule that dissolves in grease.

Dalam air berasid, ion karboksilat bertindak balas dengan ion hidrogen yang menjadikan saiz molekulnya lebih besar dan tidak larut.

In acidic water, the carboxylate ion reacts with hydrogen ion which make its molecular size larger and insoluble.

Dalam air liat, ion karboksilat bertindak balas dengan ion magnesium atau ion kalsium untuk membentuk garam terlarut.

In hard water, the carboxylate ion reacts with magnesium ion or calcium ion to form soluble salt.

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Antara ion yang berikut, yang manakah mempengaruhi fungsi sabun dalam air liat?

Which of the following ions is present in the hard water that affects the function of the soap?

Ion barium

Barium ion

Ion kalsium

Calcium ion

Ion natrium

Sodium ion

Ion kalium

Potassium ion

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Antara bahan tambah detergen yang berikut, yang manakah berfungsi untuk mengekalkan kekeringan detergen?

Which of the following additives is added to the detergent to maintain its dryness?

Natrium sulfat

Sodium sulphate

Enzim biologi

Biological enzyme

Natrium tripolifosfat

Sodium tripolyphosphate

Natrium perborat

Sodium perborate

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