Metallic Bonding Flashcards
Bonding, Structure, and Properties of Matter (13 cards)
What does metallic bonding involve?
Delocalised electrons
Metallic bonding involves electrons that are free to move around, creating a strong bond between metal ions and electrons.
What structure do metals consist of?
A giant structure
Metals are composed of a vast arrangement of atoms in a regular structure.
What holds the atoms together in metallic bonding?
Strong forces of electrostatic attraction
These forces act between the positive metal ions and the shared negative electrons.
What types of substances are held together by metallic bonding?
Metallic elements and alloys
These include pure metals and mixtures of metals.
What is the significance of delocalised electrons in metals?
They produce all the properties of metals
Delocalised electrons are crucial for the characteristics exhibited by metals.
What state are most metals in at room temperature?
Solid
Most metals are solid due to strong electrostatic forces requiring significant energy to break.
Why do metals have high melting and boiling points?
Strong electrostatic forces between metal atoms and delocalised electrons
These forces necessitate a lot of energy to overcome.
What makes metals good conductors of electricity and heat?
Delocalised electrons carry electric charge and thermal energy
This property allows metals to efficiently conduct electricity and heat.
What does it mean for metals to be malleable?
Layers of atoms can glide over each other
Malleability allows metals to be bent, hammered, or rolled into sheets.
Why are alloys harder than pure metals?
Different sized atoms distort layers of metal
The mixing of elements makes it more difficult for atoms to slide over one another.
What are alloys made of?
Two or more metals or a metal and another element
Alloys are commonly used because they are harder and more practical than pure metals.
Fill in the blank: Most metals are ______ at room temperature.
Solid
True or False: Alloys are softer than pure metals.
False
Alloys are generally harder than pure metals, making them more useful.
