Mixtures, Polarity & Electrolytes Quiz

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Challenge your understanding of mixtures, water polarity, and electrolytes.

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Rawan Amr

Egypt

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Mixtures, Polarity & Electrolytes Quiz


Froggy Jumps Mixtures, Polarity & Electrolytes QuizVersion en ligne Challenge your understanding of mixtures, water polarity, and electrolytes. par Rawan Amr 1 What is a mixture? a a) A substance made of one type of atom b c) A combination of substances physically blended c b) A combination of substances chemically bonded 2 Which is a homogeneous mixture? a a) Sand and water b b) Salt water c d) Salad dressing 3 Which mixture has particles that settle on standing? a b) Colloid b a) Solution c c) Suspension 4 What particle size range is typical for colloids? a a) < 1 nm b b) 1 – 1000 nm c d) > 10,000 nm 5 Which is an example of a colloid? a a) Sugar water b d) Air c c) Milk 6 In a solution of sugar and water, the sugar is called the: a a) Solvent b c) Mixture c b) Solute 7 Which is NOT a characteristic of a solution? a a) Uniform composition b c) Can be separated by filtration c d) Particles < 1 nm 8 Which of the following is a solid solution? a b) Brass b a) Salt water c c) Soda 9 In air (a gaseous solution), what is the solvent? a a) Oxygen b b) Nitrogen c c) Carbon dioxide 10 Which type of mixture scatters light (Tyndall effect)? a d) Both b and c b a) Solution c b) Suspension 11 What is electronegativity? a d) Ability to form ions b b) Ability to attract electrons in a bond c a) Ability to attract protons 12 Which atom is most electronegative in a water molecule? a c) Both equally b b) Oxygen c a) Hydrogen 13 Why is water a polar molecule? a c) Oxygen attracts electrons more than hydrogen b b) Electrons are shared equally c a) It has a linear shape 14 What is the bond angle in a water molecule? a b) 104.5° b d) 180° c a) 90° 15 Which symbol represents a partial positive charge? a b) δ− b c) + c a) δ+ 16 Why does sugar dissolve in water? a a) Sugar is ionic b c) Sugar is nonpolar c b) Water is polar and forms hydrogen bonds with sugar 17 Which substance will NOT dissolve well in water? a c) Oil b a) Salt c b) Sugar 18 What causes water’s bent shape? a c) Hydrogen bonding b a) Lone pairs on oxygen c b) Double bonds 19 Which is a polar solvent? a a) Kerosene b c) Water c b) Hexane 20 What type of bond exists between water molecules? a c) Hydrogen bond b a) Ionic bond c b) Covalent bond 21 What is an electrolyte? a b) A non-conductive substance b a) A substance that conducts electricity when dissolved c d) A solid solution 22 Which is a strong electrolyte? a a) Sugar water b c) Salt water c b) Vinegar 23 Which is a weak electrolyte? a c) CH3COOH in water b b) NaOH in water c a) HCl in water 24 Which does NOT conduct electricity? a a) Tap water b c) Salt water c b) Sugar water 25 Why does NaCl conduct electricity in water? a b) It releases free Na+ and Cl− ions b a) It forms molecules c c) It becomes a gas 26 What ions form when HCl dissolves in water? a c) H3O+ and Cl− b a) H+ and Cl− c b) H2O+ and Cl− 27 Which equation shows dissociation? a a) NaCl(s) → Na+(aq) + Cl−(aq) b b) C12H22O11(s) → C12H22O11(aq) c c) CH3OH(l) → CH3OH(aq) 28 Which is a non-electrolyte? a a) Vinegar b b) Ammonia solution c c) Ethanol in water 29 Why doesn’t sugar water conduct electricity? a c) It does not produce free ions b a) It forms ions c b) It dissociates completely 30 Which mixture can be separated by filtration? a c) Suspension b a) Solution c b) Colloid 31 Which bond is polar? a a) H–H b c) H–O c b) O=O 32 Which is NOT a property of water due to polarity? a b) Ability to dissolve ionic compounds b a) High surface tension c c) Low boiling point 33 What happens when acetic acid dissolves in water? a c) Partially ionizes b a) Completely ionizes c b) Does not ionize at all 34 Which solution will light up a conductivity bulb brightly? a b) Sugar solution b a) Distilled water c c) NaCl solution 35 What is the particle size in a solution? a d) Visible b b) 1–1000 nm c a) < 1 nm 36 Which is a heterogeneous mixture? a b) Salt water b a) Air c c) Oil and vinegar 37 What type of mixture is blood? a b) Suspension b a) Solution c c) Colloid 38 Which substance is the solute in seawater? a a) Water b c) Oxygen c b) Salt 39 Why does oil not dissolve in water? a d) Oil is nonpolar, water is polar b a) Oil is polar c b) Water is nonpolar 40 Which will dissolve in kerosene? a c) Wax b b) Sugar c a) Salt 41 Why is tap water weakly conductive? a b) It is pure H2O b d) It is a non-electrolyte c a) It contains dissolved ions 42 What happens to conductivity if more NaCl is added to water? a a) Increases b c) Stays the same c b) Decreases 43 Which is TRUE about colloids? a c) Do not scatter light b b) Cannot be filtered c a) Particles settle quickly 44 Which substance in water is a weak electrolyte? a a) Table salt b c) Vinegar c b) Baking soda 45 What is the main reason water dissolves ionic compounds? a c) Low density b a) Low boiling point c b) Polar nature 46 Which mixture shows the Tyndall effect? a b) Copper sulfate solution b a) Salt water c c) Fog 47 What type of electrolyte is pure water? a c) Non-electrolyte b b) Weak c a) Strong

Mixtures, Polarity & Electrolytes Quiz

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Mixtures, Polarity & Electrolytes QuizVersion en ligne

par Rawan Amr

What is a mixture?

Which is a homogeneous mixture?

Which mixture has particles that settle on standing?

What particle size range is typical for colloids?

Which is an example of a colloid?

In a solution of sugar and water, the sugar is called the:

Which is NOT a characteristic of a solution?

Which of the following is a solid solution?

In air (a gaseous solution), what is the solvent?

Which type of mixture scatters light (Tyndall effect)?

What is electronegativity?

Which atom is most electronegative in a water molecule?

Why is water a polar molecule?

What is the bond angle in a water molecule?

Which symbol represents a partial positive charge?

Why does sugar dissolve in water?

Which substance will NOT dissolve well in water?

What causes water’s bent shape?

Which is a polar solvent?

What type of bond exists between water molecules?

What is an electrolyte?

Which is a strong electrolyte?

Which is a weak electrolyte?

Which does NOT conduct electricity?

Why does NaCl conduct electricity in water?

What ions form when HCl dissolves in water?

Which equation shows dissociation?

Which is a non-electrolyte?

Why doesn’t sugar water conduct electricity?

Which mixture can be separated by filtration?

Which bond is polar?

Which is NOT a property of water due to polarity?

What happens when acetic acid dissolves in water?

Which solution will light up a conductivity bulb brightly?

What is the particle size in a solution?

Which is a heterogeneous mixture?

What type of mixture is blood?

Which substance is the solute in seawater?

Why does oil not dissolve in water?

Which will dissolve in kerosene?

Why is tap water weakly conductive?

What happens to conductivity if more NaCl is added to water?

Which is TRUE about colloids?

Which substance in water is a weak electrolyte?

What is the main reason water dissolves ionic compounds?

Which mixture shows the Tyndall effect?

What type of electrolyte is pure water?