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WorksheetsBonding In Elements - Higher Chemistry Unit 1
Total questions: 15
Worksheet time: 8mins
Which of the following elements is monatomic at room temperature and pressure?
Chlorine
Hydrogen
Helium
Sulfur
What are the forces of attraction that hold Argon atoms together?
pd-pd
LDF
hydrogen bonding
covalent bonds
Which of the following consists of discrete covalent molecules
Lithium
Boron
Sulfur
Magnesium
The two chlorine atoms in a molecule of chlorine are held together by
LDF
a polar covalent bond
a pure covalent bond
an ionic bond
Which of these consists of polyatomic, X8 molecules?
Phosphorus
Argon
Oxygen
Sulfur
Which of the following does not contain covalent bonds?
solid sulfur
hydrogen gas
argon gas
oxygen gas
Why do substances such as diamond and graphite have high melting and boiling points?
they are held together by strong hydrogen bonds
the metallic bonds present are intramolecular forces and so therefore very hard to break
carbon atoms in these substances are held together by strong covalent bonds
these structures are so large that LDF forces are very strong
Why does Sulfur have a higher melting point than Phosphorus?
Sulfur has a larger gfm and so more electrons so LDF forces are stronger and harder to break
Sulfur has strong covalent bonds whereas Phosphorus only has LDF to break to change state
Trick question - It doesn't! Phosphorus has a higher melting point that Phosphorus
Sulfur has pdpd and phosphorus has LDF. Pdpd are harder to break
Which structure best describes the normal state of sodium?
metallic lattice
monatomic gas
molecular solid
molecular gas
Which of the following best describes the normal state of a fullerene?
covalent network
metallic lattice
covalent molecule
monatomic gas
Which of the following would never be found in elements?
a pure covalent bond
LDF
a polar covalent bond
metallic bonding
Which of these would not be a covalent network?
fullerene
graphite
diamond
silicon
What is the correct formula of phosphorus?
P
P2
P3
P4
Which element can be described as diatomic?
Helium
Hydrogen
Lithium
Beryllium
Graphite has...
strong covalent bonding within the layers, but only weak between layers (LDF)
strong metallic bonds within layers, but only weak between layers (LDF)
strong covalent bonding within the layers, but only weak between layers (pdpd)
strong covalent bonds within and between layers, hence the large boiling point
