MEDIUM
MYP:4-5
IMPORTANT
Earn 100

The strength of a bond is related to the size of the atoms and electronegativity. Interpret the general pattern of the elements in the periodic table to make a scientifically supported judgment about which of the following pair of covalent bonds below is likely to have the larger dipole: 

H-O bond or a H-F bond.

Important Questions on How Do Atoms Bond?

MEDIUM
MYP:4-5
IMPORTANT

The strength of a bond is related to the size of the atoms and electronegativity. Interpret the general pattern of the elements in the periodic table to make a scientifically supported judgment about which of the following pair of covalent bonds below is likely to have the larger dipole: 

H-Cl bond or Cl-Cl bond.

HARD
MYP:4-5
IMPORTANT

Use a labelled diagram to describe how different types of bonds result in the different physical properties of two allotropes of carbon, graphite and diamond. 

MEDIUM
MYP:4-5
IMPORTANT

Hydrated cobalt(II) chloride CoCl2.6H2O is pink but anhydrous cobalt(II) chloride CoCl2 is blue. Suggest how this compound might be used to determine the probability of rain. 

HARD
MYP:4-5
IMPORTANT

Analyse the information in the following table and make scientifically supported judgments about the nature of the bonds between atoms in the first three molecules, compared to the nature of the bonds between atoms in the second group of three molecules.

 (Note: The relative molecular mass is calculated by adding the relative atomic mass (RAM) of all the atoms together. The table shows two groups of three molecules with similar molecular mass, and their boiling and melting points)

Substance Formula RMM(relative molecular mass) Melting point/°C Boiling point/°C
Water H2O 18 0 100
Ammonia  NH3 17 -78 -33
Hydrogen fluoride HF 20 -83 20
Nitrogen monoxide NO 30 -164 -152
Oxygen O2 32 -210 -183
Nitrogen N2 28 -210 -196
HARD
MYP:4-5
IMPORTANT

Explain how the physical and chemical properties of substances are consequences of the following type of bond: 

Metallic bond. 

HARD
MYP:4-5
IMPORTANT

Explain how the physical and chemical properties of substances are consequences of the following type of bond: 

Ionic bond.

HARD
MYP:4-5
IMPORTANT

Explain how the physical and chemical properties of substances are consequences of the following type of bond: 

London (dispersion) forces and intermolecular forces. 

HARD
MYP:4-5
IMPORTANT

Explain how the physical and chemical properties of substances are consequences of the following type of bond: 

Hydrogen bonding and intermolecular forces.