Which type of bond?
Which type of bond is the strongest, ionic, covalent or metallic?
Covalent
How are the positive and negative ions formed from the neutral atoms and why?
metals lose electrons to have 8 valence electrons like a noble gas before them and nonmetal atoms gain the electrons to complete the 8 valence electrons like the noble gas after them.
How is a covalent bond form?
A bond formed by the sharing of electrons between two metal atoms.
How is a metallic bond formed?
Forms between metal atoms and their valence electrons are free to move from one atom to another atom.
Compound highly conducts electricity and is malleable
metallic
Which type of bond is made from an attraction between a positively and negatively charge particle?
Ionic Bond
What type of structure does an ionic compound have?
Crystal lattice structure
When atoms join together with covalent bonds, they form.....
Molecules
Are metallic compounds good conductors of electricity?Why?
Yes, because the valence electrons move (flow) freely
Compound is insoluble and melts at low temperature
Covalent
Which type of bond is made by the delocalization (valance electrons moving from one positive atom to another) of electrons.
Metallic Bond
Why are ionic compounds brittle?
Ionic compounds break easily because when pressure is apply to it, similar charge ions are forced to get close together forcing the compound to break.
Why do covalent compounds have low melting and boiling points?
because the forces that hold the molecules together (intermolecular forces) are weak. Only a small amount of energy is needed to separate the molecules from each other.
What is malleability?
The ability of a metal to be hammered into sheets.
Compound has a very high melting point
Ionic
Which kind of bond makes a crystal lattice structure?
Ionic Bond
Explain the electrical conductivity of ionic compounds in solid and liquid forms.
Solid ionic compounds are poor conductors because the + and - bond is strong making the over all substance zero charge.
Melted ionic compounds and dissolved in water ionic compounds conduct electricity because the + charge ions are moving freely and are able to attract and transfer electrons.
Are covalent compounds good conductors of electricity?
No, they are poor conductors because their valence electrons are not free to move and do not have the tendency to attract electrons from the outside of the molecule
What is ductility?
The ability to be formed into long thin wires.
Compound highly conducts electricity and is brittle
IONIC