Air dan Larutan / Water and Solutions Quiz

Apakah yang dimaksudkan dengan 'pelarut semesta'? / What is meant by 'universal solvent'?

• Aseton / Acetone
• Air / Water
• Alkohol / Alcohol
• Minyak / Oil

Berapakah takat didih air tulen? / What is the boiling point of pure water?

• 50°C
• 100°C
• 0°C
• 212°C

Apakah yang menyebabkan tegangan permukaan air? / What causes water's surface tension?

• Graviti / Gravity
• Daya lekitan antara molekul air / Cohesive forces between water molecules
• Tekanan udara / Air pressure
• Suhu air / Water temperature

Apakah komposisi molekul air? / What is the composition of a water molecule?

• 2 atom hidrogen, 1 atom oksigen / 2 hydrogen atoms, 1 oxygen atom
• 2 atom oksigen, 1 atom hidrogen / 2 oxygen atoms, 1 hydrogen atom
• 1 atom oksigen, 1 atom hidrogen / 1 oxygen atom, 1 hydrogen atom
• 1 atom hidrogen, 2 atom oksigen / 1 hydrogen atom, 2 oxygen atoms

Apakah yang dimaksudkan dengan keterlarutan? / What is meant by solubility?

• Jumlah pelarut yang diperlukan untuk melarutkan zat terlarut / Amount of solvent needed to dissolve a solute
• Kuantiti maksimum zat terlarut yang dapat larut dalam 100 ml pelarut / Maximum quantity of solute that can dissolve in 100 ml of solvent
• Kelajuan zat terlarut melarut / Speed at which a solute dissolves
• Suhu di mana zat terlarut mula melarut / Temperature at which a solute begins to dissolve

Apakah faktor yang TIDAK mempengaruhi kadar keterlarutan? / Which factor does NOT affect the rate of solubility?

• Kadar kacauan / Rate of stirring
• Saiz zat terlarut / Size of solute particles
• Warna zat terlarut / Color of solute
• Suhu pelarut / Temperature of solvent

Apakah perbezaan utama antara larutan dan ampaian? / What is the main difference between a solution and a suspension?

• Larutan mengandungi gas, ampaian mengandungi pepejal / Solutions contain gases, suspensions contain solids
• Larutan adalah panas, ampaian adalah sejuk / Solutions are hot, suspensions are cold
• Larutan tidak boleh dituras, ampaian boleh dituras / Solutions cannot be filtered, suspensions can be filtered
• Larutan adalah jernih, ampaian adalah keruh / Solutions are clear, suspensions are cloudy

Apakah contoh koloid dalam kehidupan harian? / What is an example of a colloid in everyday life?

• Air hujan / Rain water
• Air garam / Salt water
• Air sungai / River water
• Susu / Milk

Mengapa air dikenali sebagai pelarut semesta? / Why is water known as the universal solvent?

• Kerana ia tidak mempunyai rasa / Because it is tasteless
• Kerana ia tidak mempunyai warna / Because it is colorless
• Kerana ia boleh melarutkan hampir semua bahan / Because it can dissolve almost all substances
• Kerana ia mudah didapati / Because it is readily available

Apakah kesan suhu terhadap kadar keterlarutan? / What is the effect of temperature on the rate of solubility?

• Semakin tinggi suhu, semakin rendah kadar keterlarutan / Higher temperature decreases rate of solubility
• Kadar keterlarutan hanya dipengaruhi oleh suhu yang sangat tinggi / Rate of solubility is only affected by very high temperatures
• Semakin tinggi suhu, semakin tinggi kadar keterlarutan / Higher temperature increases rate of solubility
• Suhu tidak mempengaruhi kadar keterlarutan / Temperature does not affect rate of solubility