Ionic Compounds & Names

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Presentation transcript:

Ionic Compounds & Names (5.6 in textbook)

Sodium (Na) is highly __reactive____ and chlorine gas is __toxic___ Sodium (Na) is highly __reactive____ and chlorine gas is __toxic___. But when they are combined, they react and create harmless __NaCl_ or _table salt__

Sodium (Na) is highly __reactive____ and chlorine gas is __toxic___ Sodium (Na) is highly __reactive____ and chlorine gas is __toxic___. But when they are combined, they react and create harmless __NaCl_ or _table salt__ Strange but true!

Another look This one shows atoms.

Remember: an ion = charged particle They can be +ve or -ve

Remember: an ion = charged particle They can be +ve or -ve Metals become +ve ions (cations) and Non-metals become -ve ions (anions)

Remember: an ion = charged particle They can be +ve or -ve Metals become +ve ions (cations) and Non-metals become -ve ions (anions) So… sodium becomes a sodium ion – what is it’s charge? ___

Remember: an ion = charged particle They can be +ve or -ve Metals become +ve ions (cations) and Non-metals become -ve ions (anons) So… sodium becomes a sodium ion – what is it’s charge? +1

Remember: an ion = charged particle They can be +ve or -ve Metals become +ve ions (cations) and Non-metals become -ve ions (anions) So… sodium becomes a sodium ion – what is it’s charge? +1 And… chlorine becomes a chloride ion – what is it’s charge? __

Remember: an ion = charged particle They can be +ve or -ve Metals become +ve ions (cations) and Non-metals become -ve ions (anions) So… sodium becomes a sodium ion – what is it’s charge? +1 And… chlorine becomes a chloride ion – what is it’s charge? -1

Really, the sodium gave it’s electron to chlorine and both are stable!

These 2 ions are attracted to one another and form compounds - in this case NaCl or regular, harmless, table salt!

Ionic compound a compound made up of one or more positive metal ions and one or more negative non-metal ions. See page #192 for a great visual!

Characteristics of Ionic Compounds These ionic compounds form large cubic crystals There is no ‘NaCl’ particle.

Characteristics of Ionic Compounds These ionic compounds form large cubic crystals There is no ‘NaCl’ particle. Ionic compounds dissolve in water and break into their separate ions again. So… salty water has charged ions in it. Something that has charge can conduct electricity and salty water does! Light bulb is on!

Electrolyte a compound that separates into ions when it dissolves in water, producing a solution that conducts electricity. See page #193 and #194 for a great picture.