The two example seen above are designated as a simple covalent molecules as they are small molecules only consisting of a few atoms. All simple covalent molecules have a weak attraction between other molecules. For example in Nitrogen gas there are weak intermolecular forces between many nitrogen molecules meaning it is a gas. The same happens in chlorine.
These weak forces are not bonds like covalent bonds they are just a weak attraction between molecules. As a result these bonds can easily be broken and reformed. Most simple covalent molecules are gases due to these weak attractions. But elements like iodine are solids because of the size of the atoms and having so many electrons makes the intermolecular forces stronger meaning it has a higher melting and boiling point.Simple covalent compounds have many properties. Usually they exist as liquids or gases due to the weak intermolecular forces between molecules. They also have low melting and boiling points due to these weak interactions. They can also not conduct electricity as they have no free electrons. Also often they are not soluble as molecules and when put into water or another solvent they will not mix.
A solvent is a liquid substance that can dissolve a solid
Melting point is the temperature at which a solid turns into a liquid. The temperature when atoms have enough energy to over come their bonds and turn into a liquid.
Boiling point is the temperature at which a liquid turns into a gas. The particles have enough internal energy to overcome the bonds in the liquid.
Intermolecular forces are temporary interactions between ions, atoms or compounds that are not considered to be sharing electrons.
Simple covalent bonded compounds that have low melting and boiling points and weak intermolecular forces. Simple covalent compounds share a pair of electrons and there are not many atoms bonded together.
An atom is the smallest particle that makes up all matter
A molecule is a pair of elements with the same number of protons bonded together
Soluble is a word used to describe the property of a substance that allows it to be dissolved into a liquid and form an aqueous solution