Ions that are made up of more than one atom. BONUS POINT: Is aluminum or is carbonate polyatomic?
Explain why salt, when dissolved in water, conducts electricity? Why does it not conduct as a solid?
Salt conducts electricity in solution because it is made up of ions and ions carry an electrical charge. In water, ions bonds break apart and move around freely allowing them to conduct electricity. As a solid, these ions are not moving around freely enough to conduct electricity.
What do you call a group of atoms joined by covalent bonds?
Which has a lower melting point – water or magnesium chloride? WHY?
Water – Water is a molecular compound while magnesium chloride is an ionic compound. Forces between molecules are weaker than forces between ions in ionic compounds. Thus, it takes less heat to melt molecular compounds.
How does an ion of alumnium with a charge of 3+ form?