1 / 14

Learning Outcomes

Learning Outcomes. Having contributed to a variety of practical activities to make and break down compounds, I can describe examples of how the properties of compounds are different from their constituent elements. Types of Chemical Bonding. There are two types of bonding: IONIC bonding

marcel
Download Presentation

Learning Outcomes

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Learning Outcomes • Having contributed to a variety of practical activities to make and break down compounds, I can describe examples of how the properties of compounds are different from their constituent elements

  2. Types of Chemical Bonding • There are two types of bonding: • IONIC bonding • COVALENT bonding • Ionic bonded compounds involve a metal and a non-metal atom bonded together.

  3. Ionic Bonding • The metal atom transfers one or more electrons to the non metal atom. • Atoms turn into ions when they lose or gain electrons.

  4. Positive and negative ions attract one another and bind together forming a new substance.

  5. Ionic compounds like CopperChloride and sodium chloride do not conduct electricity when solid. • Sodium chloride is soluble in water and the solution conducts electricity.

  6. Ionic Bonding CopperChloride is made up from +ve charged copper atoms and –ve charged chlorine atoms. Atoms with an electrical charge are called ions.

  7. Ionic Bonding Dissolved or melted The + and – ions are now able to conduct when electricity is passed through the liquid

  8. Splitting Compounds • Ionic Compounds, if dissolved or molten, can be split into their constituent elements using electricity in a process called Electrolysis. • The chemical and physical properties of the constituent elements are very different from those of the compound.

  9. Electrolysis of Copper Chloride • Collect the experiment card Electrolysis of Copper Chloride and do the experiment in pairs. • Q1. What elements make up the compound Copper Chloride? • Q2. What did you see at the +ve electrode? • Q3. What did you see / smell at the –ve electrode? • Q4. What elements do you think have been formed at the +ve and –ve electrodes?

  10. Electrolysis of Copper Chloride Copper Metal +veCopper ions attracted to the –ve electrode -ve Chlorine ions attracted to the +ve electrode Chlorine Gas Copper Chloride Solution Make sure you write-up your experiment and include a diagram

  11. Electrolysis of Copper Chloride • When an electric current was passed through a solution of copper chloride there were chemical changes occurring at the electrodes. • At the negative electrode a browncoloured solidappeared. It was the metal Copper. • At the positive electrode a gas was given off (Chlorine)

  12. Covalent Bonding • Covalent bonded compounds involve two or more non-metal atoms sharing electrons.

  13. Cl Cl Cl Cl shared pair of electrons covalent bond Covalent Bonding Covalent substances have no free electrons and contain no charged ions. Therefore, they do not conduct electricity.

  14. Summary • Ionic Compounds will conduct electricity if molten or dissolved in water because they are made up of +ve charged metal ions and –ve charged non-metal ions. • Covalent compounds will not conduct electricity because they do not contain either charged ions or free electrons. • Covalent compounds cannot be broken apart using electricity.

More Related