SCIENCE
PHYSICAL SCIENCES
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
|
High melting point
|
|
|
Poor conductor in a solid state
|
|
|
Crystal formations can shatter when struck with a hammer
|
|
|
Strong attractions among ions within a crystal lattice.
|
|
|
All of the above
|
Detailed explanation-1: -They form crystals. They have high melting points and high boiling points. They have higher enthalpies of fusion and vaporization than molecular compounds. They’re hard and brittle. They conduct electricity when they are dissolved in water. They’re good insulators. 01-Mar-2021
Detailed explanation-2: -Ionic compounds form crystal lattices rather than amorphous solids. They have higher enthalpies of fusion and vaporization than molecular compounds. They are hard. They are brittle.
Detailed explanation-3: -High melting points and boiling points Ionic compounds have high melting and boiling points, so they are in the solid state at room temperature. See the study guide on the three states of matter to see how bonding and structure are related to the properties of substances.
Detailed explanation-4: -They are usually crystalline solids. They have high melting points and high boiling points. They are usually soluble in water but insoluble in organic solvents. They conduct electricity when dissolved in water or when melted.
Detailed explanation-5: -(1) Ionic compounds form crystals lattices rather than amorphous solids. (2) They conduct electricity but only when they are dissolved in water. (3) They have higher enthalpies of fusion and vaporization than molecular compounds.