WorksheetsChemistry Molecules in our lives
Total questions: 16
Worksheet time: 14mins
What are covalent bonds?
A covalent bond are anions and cations that share the same electrons
A covalent bond is a bond between carbon and nitrogen
A covalent bond is a sharing of one or more pairs of electrons between two atoms.
A covalent bond is a special type of attraction between molecules to bond atoms.
What forms compounds together via covalent bonding?
Metals
Non-metals
What do Lewis structures show? (also known as electron dot diagrams or electron cross diagrams)
shows the bonding between atoms of a molecule
shows lone pairs of electrons that may exist in the molecule.
shows the process of how covalent bonds are made
What is an intermolecular force?
Intermolecular forces of attraction are acts between atoms and other types of neighbouring particles.
An intermolecular force is an existing or place between molecules.
An intermolecular force is the force that mediates interaction between molecules.
Properties of molecular substances?
small number of atoms strongly bonded together
High water solubility
in room temperature
high number of atoms strongly bonded together
Have low melting/boiling points
simple molecular substances
giant molecular substances
Properties of giant molecular substances?
solids at room temperature
have very high melting points and boiling points
gas at room temperature
have very low melting points
What are the properties of graphite?
has crystalline nature
4 covalent bonds with neighboring C atoms
has layered structure
3 sigma bonds with 3 other C atoms
high melting point
What do you study in organic chemistry
study of the structure
study of properties
study of composition
study of reactions
All the above
Explain what is meant by a homologous series of organic compounds
Which molecular formulae is INCORRECT?
Ethane: (C1H6)
Propane: (C3H8)
Butane: (C4H10)
Pentane: (C5H12)
What is the formulae for Pentane?
C5H10
C5H12
C3H12
C5H14
The boiling points of alkanes (a) with increasing number of carbons.
All of the alkanes containing 4 or more carbon atoms show structural isomerism
True
False
This is the drawing of a C4H10 isomer
How can CFCs damage the ozone
layer?
