Metals and non-metals have different properties. Properties of metals can be explained in terms of metallic structure and bonding. Different chemical models have different features and limitations.
Where are the metals found in the periodic table?
On the left and in the middle
On the right
Scattered all over
Which set of three properties do most metals show?
Hard, malleable, low melting point
Hard, malleable, high melting point
Soft, malleable, high melting point
What property of copper makes it suitable for electrical wiring?
It is shiny
It has a high density
It is a good conductor of electricity
What kind of bonding is in iron?
What happens to the outer electrons in metallic structures?
They are shared between atoms
They are transferred between atoms
They are delocalised
Why can metals be beaten and bent into different shapes?
Because the bonding between metal atoms is strong and cannot break
Because the layers of metal atoms can slide over each other
Because the outer electrons in metals are free to move about the structure
Which type of bonding and structure has billions of non-metal atoms held together, in a regular structure, by sharing electrons between atoms?
Covalent molecular structure
Giant ionic lattice structure
Giant covalent structure
What is an ionic bond?
A force of attraction between positive ions
A force of attraction between negative ions
A force of attraction between oppositely charged ions
What do dot and cross diagrams, like the one shown below, help explain about a compound?
How the electrons are shared to form the bonds
The shape of the molecules formed
The forces of attraction that hold the molecules together
What does the 2D model of the sodium chloride lattice, shown below, help explain about the bonding and structure in sodium chloride?
How the ions are formed by the loss and gain of electrons
How the oppositely charged ions attract each other to form a regular pattern
Why sodium chloride conducts electricity when molten or dissolved