TEAS Properties of Solutions Practice Questions

5 free Properties of Solutions practice questions

Pick an answer and check it to see the full step-by-step explanation.

1. Question 1
   A nurse dissolves a solid in water to prepare a solution. Which observation most strongly suggests the solid is an ionic compound rather than a covalent compound?

   The solution conducts electricity well after the solid dissolvesThe solid forms discrete molecules held together by shared electronsThe solid has a low melting point and becomes soft near body temperatureThe solid dissolves in water but the solution does not conduct electricity

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2. Question 2
   A student compares two solids commonly encountered in healthcare settings. Which property is most characteristic of an ionic compound compared with a covalent molecular compound?

   It forms a crystal lattice and has a relatively high melting pointIt is insoluble in water because it lacks polarityIt conducts electricity well as a solid at room temperatureIt is made of discrete molecules with low melting and boiling points

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3. Question 3
   Which statement best describes a covalent bond?

   Electrons are transferred from one atom to another, forming oppositely charged ionsElectrons are shared between atoms to fill their outer electron shellsAtoms are held together by the attraction between neutrons and electronsProtons are exchanged between atoms, changing each element’s identity

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4. Question 4
   A nurse reviews why certain medications are formulated as salts while others are not. Which statement best explains why many ionic compounds dissociate in water?

   Nonpolar water molecules pull electrons away from the compoundIonic compounds form covalent bonds with water, preventing separationIonic compounds remain neutral in water because charges cancel outPolar water molecules stabilize separated ions by surrounding them

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5. Question 5
   Which statement best predicts a difference between an ionic compound and a covalent compound at room temperature?

   Covalent compounds always dissolve readily in water, whereas ionic compounds never dissolve in waterIonic compounds have lower melting points than covalent compounds because their bonds are weakerIonic compounds are more likely to be brittle solids, whereas many covalent compounds are gases, liquids, or soft solidsCovalent compounds conduct electricity as solids because electrons move freely through the structure

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