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WorksheetsWater Test
Total questions: 20
Worksheet time: 2hrs 40mins
Match the following words and definitions.
polar
having areas of opposite charge
hydrophilic
water loving
hydrophobic
water fearing
micelle
a molecular cluster composed of a hydrophobic interior and a hydrophilic surface
hydration sphere
water molecules surrounding an ion in solution
What type of bond holds a water molecule together?
Covalent
Ionic
Dipole-Dipole
Metallic
Why do electrons in a water molecule spend a greater amount of time near the oxygen nucleus?
Because water is ionic.
Because water is covalent.
Because hydrogen has 1 proton.
Because oxygen has 8 protons.
What does it mean when a molecule is "polar"?
The molecule is a solid.
The temperature of the molecular solution is cold.
There is an uneven distribution of electron charge in the molecule.
Hydration spheres have been formed by the molecule.
Why is water known as the universal solvent?
Because of water's ability to dissolve many substances.
Because the water has covalent bonds.
Because the water molecules are cohesive.
Because water forms hydration spheres around ions in solution.
Match the following words with their definitions.
cohesive
like molecules stick together
adhesive
dissimilar molecules stick together
homogeneous
a mixture that macroscopically appears the same throughout
heterogeneous
a mixture that macroscopically does not appear the same throughout
solution
a homogeneous mixture
What is a hydrogen bond?
When a hydrogen atom is bonded to an oxygen atom in a water molecule.
When a negative oxygen from one molecule is attracted to a positive hydrogen from another molecule.
When hydrogen is covalently bonded to another atom.
When hydrogen is bonded to another hydrogen.
Draw a water molecule attracted to a chlorine ion with as much detail and labelling as possible.
Explain how water dissolves salt.
A (a) is composed of a (b) which is dissolved into a (c) .
Reorder the following into the steps taken to complete a lab experiment.
Read experiment.
Create data table.
Put on goggles.
Perform experiment.
Enter data into the data table.
What is an ionic bond?
A bond between two molecules.
A bond between to nonmetal atoms.
A bond between to metallic atoms.
A bond between a metal atom and a nonmetal atom.
What is a covalent bond?
A bond between two polar molecules.
A bond between two nonpolar molecules
A bond between a nonmetal atom and a metal atom.
A bond between two metals.
What is a dipole-dipole bond?
An intramolecular bond.
An intermolecular bond.
An ionic bond
A covalent bond.
(a) molecules are composed of long chains of (b) and (c) atoms. At one of the the chain is a configuration that likes to be in water ( (d) ). The other end shuns water ( (e) ) but attaches easily to grease.
Which property of water allows water strider bugs to walk or skim over water without sinking into the water?
surface tension
adhesion
solubility
low flammability
Which property of water explains why raindrops have the shape they do?
adhesion
surface tension
cohesion
solubility
Match the following words with their examples.
evaporation
liquid water on Earth's surface changes into water vapor in the atmosphere
sublimation
snow or ice on Earth's surface changes directly into water vapor in the atomsphere.
transpiration
plants give off liquid water, most of which evaporates into the atmosphere
condensation
Water vapor in the atmosphere changes to liquid droplets in the atmosphere forming clouds or fog
precipitation
water droplets in clouds are pulled to Earth's surface by gravity forming rain or snow
What is a quick way to define electronegativity?
high freezing point
large number of protons
low freezing point
electron greedy
Draw a water molecule with as much detail and labelling as possible.
