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WorksheetsWater and Aqueous Systems
Total questions: 10
Worksheet time: 7mins
In the absence of any external forces, the shape of a drop of water is determined by which of the following?
surface tension
density
viscosity
boiling point
Which of the following compounds will dissolve in water?
potassium chloride (KCl)
hexane (C6H14)
sand (SiO2)
methane (CH4)
An electrolyte is a compound that conducts electricity when present in aqueous solutions, and a nonelectrolyte is a compound that does not conduct electricity when present in aqueous solution. Which of the following compounds are nonelectrolytes? Select all that apply.
sulfuric acid, H₂SO₄
potassium chloride, KCl
sodium chloride, NaCl
sucrose, C₁₂H₂₂O₁₁
distilled water, H₂O
Compounds with which type of bond have the potential to dissociate in water?
ionic bond
metallic bond
covalent network bond
nonpolar covalent bond
The following three compounds are listed in order of decreasing strength of their hydrogen bonds: water (H₂O), ammonia (NH₃), hydrogen fluoride (HF). Which compound has the highest boiling point?
water
ammonia
hydrogen fluoride
Surface tension is the property of water in which...
water molecules at the surface tend to stick together.
water spills easily.
water tends to be see-through.
water molecules stick to the bottom
water molecule defy gravity
Which of the following is a result of the high surface tension of water?
Water droplets forming spherical shapes
Water easily mixing with oil
Water freezing at higher temperatures
Water boiling at lower temperatures
What is the primary cause of water's high surface tension compared to most other liquids?
Its high boiling point
The hydrogen bonds between water molecules
Its molecular weight
The covalent bonds within water molecules
In the context of water molecules, what does the term "hydrogen bonding" specifically refer to?
The bond between two hydrogen atoms
The bond between a hydrogen atom and an oxygen atom within the same molecule
The attractive force between a hydrogen atom of one water molecule and an oxygen atom of another water molecule
The repulsive force between hydrogen atoms of adjacent water molecules
How does the structure of water contribute to its high specific heat capacity, and why is this important for the environment?
The covalent bonds in water require more energy to break, stabilizing temperatures.
The ionic bonds in water require more energy to break, stabilizing temperatures.
The hydrogen bonds in water require more energy to break, stabilizing temperatures.
The van der Waals forces in water require more energy to break, stabilizing temperatures.
