FOOD CHEMISTRY
BASIC PRINCIPLES OF CHEMISTRY
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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form between two metals
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form a crystalline structure
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involve a sharing of electrons
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None of the above.
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Detailed explanation-1: -Ionic compounds are hard and brittle. Ionic compounds dissociate into ions when dissolved in water. Solutions of ionic compounds and melted ionic compounds conduct electricity, but solid materials do not. An ionic compound can be identified by its chemical formula: metal + nonmetal or polyatomic ions.
Detailed explanation-2: -Ionic compounds typically are solids at room temperature. They form a crystal lattice structure when more than one molecule is present (see Figure A). Notice that the positive charges and negative charges alternate. This results in a very strong attractive force between all atoms of the crystal.
Detailed explanation-3: -Ionic bonds are formed between two or more atoms by the transfer of one or more electrons between atoms. Electron transfer produces negative ions called anions and positive ions called cations. Ionic substances exist as crystalline solids.
Detailed explanation-4: -Ionic Bonds A second way to form crystals is through ionic bonding. Ionic bonds are formed when ions with positive charges (cations) are in close proximity to ions with negative charges (anions). Every ionic crystal is composed of at least one cation and one anion creating a net neutral compound.