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Table salt is the result of an ionic bond. These ionic bonds are formed as a result of a chemical reaction between chlorine and sodium.
sand is a heterogeneous mixture of different grains of different types of stone. An ionic bond is a bond that happens at a molecular level (atoms bonding with atoms), and sand is just many small rocs and crystals mixed together
Silicon crystals precipitates coexist with metallic phase of aluminium. This alloy is a nonhomogeneous mixture after my opinion.
No chemical bond, but a metallic bond.
Group 18 (noble gases), because there outer energy level is full
Covalent
ionic bond.
Elements are found on the periodic table and have a chemical bond
A covalent bond like in hydrogen molecule or a metallic bond like in copper or an ionic bond like in NaCl are examples of chemical bonds.See the Related Questions to the left for more information about chemical bonding.
Table salt is the result of an ionic bond. These ionic bonds are formed as a result of a chemical reaction between chlorine and sodium.
an ionic bond holds these crystals together
non polar bond
sand is a heterogeneous mixture of different grains of different types of stone. An ionic bond is a bond that happens at a molecular level (atoms bonding with atoms), and sand is just many small rocs and crystals mixed together
Water: Hydrogen and Oxygen (H2O) or Table Salt: Nitrogen and Cholrine (NaCl)
Ionic bonding
In most cases, covalent bonds are usually weaker, but there are exceptions such as diamond and graphite.
The chemical bond for NaOH is a covalent bond.