Metallic Bonding Flashcards
What structure do metals consist of?
Giant structures.
What are the electrons like in metals?
The electrons in the outer shell of the metal atoms are delocalised.
What does delocalised mean?
Free to move around.
How strong are the electrostatic forces of attraction in metallic bonding?
There are strong forces of electrostatic attraction between positive metal ions and the shared negative electrons.
What is metallic bonding?
When the forces of attraction hold the atoms together in a regular structure.
How strong is metallic bonding?
Metallic bonding is very strong.
What are examples of compounds held together by metallic bonding?
Metallic elements and alloys.
What produces all of the properties of metals?
The delocalised electrons in the metallic bonds.
How much energy do the electrostatic forces in metals need to be broken, and why?
Lots of energy is needed to break them.
The electrostatic forces between the metal ions and delocalised electrons are very strong.
What are the melting and boiling points like in compounds with metallic bonds?
Most compounds with metallic bonds have high melting and boiling points.
What state are compounds with metallic bonds at room temperature?
They’re generally shiny solids at room temperature.
Are compounds with metallic bonds soluble in water?
Compounds with metallic bonds are not soluble in water.
Are metals denser than non-metals, and why?
Metals are generally denser than non-metals, as the ions in the metallic structure are packed closer together.
Are pure metals malleable?
Pure metals are malleable, as the layers of atoms can slide over each other.
What does malleable mean?
Something that can be hammered or rolled into flat sheets.
Are metals good conductors of heat and electricity, and why?
Yes, because the delocalised electrons carry electrical current and thermal (heat) energy through the material.
Why do all metals have similar basic properties?
Yes, because all metals have metallic bonding.
Why don’t non-metals usually have the same properties as metals?
Because non-metals don’t have metallic bonding.
Since non-metals form a variety of different structures, what does this tell you about their chemical and physical properties?
Because non-metals form a variety of different structures, they also have a wide range of chemical and physical properties.
How do non-metals usually look?
Non-metals are usually very dull-looking.
How do non-metals usually feel?
More brittle than metals.
What is the boiling point like in non-metals?
Non-metals have low boiling points.
What state are non-metals at room temperature?
Non-metals are usually not solids at room temperature.
How dense are non-metals?
Non-metals usually have a lower density.
Do non-metals generally conduct electricity?
Non-metals usually don’t conduct electricity.
How are the chemical properties different in non-metals?
Non-metals tend to gain electrons to form full outer shells (they are on the top and right-hand side of the periodic table, and their outer shells are generally over half-filled).
How are the chemical properties different in metals?
Metals lose electrons to gain full outer shells (they are found at the bottom and left-hand side of the periodic table, and their outer shells are generally under half-filled).
