Why small covalent substances have different properties from macro molecules?
• Simple covalent substances will only contain a few atoms that are held by strong covalent bonds for example co2 the molecules contain one atom of carbon that is bonded with 2 oxygen atoms. The intermolecular forces causes the small covalent structures to have a low melting/boiling points, they don’t conduct electricity because they don’t have any free electrons or an electric charge overall.
• Macro molecules will have large covalent structure compared to the small covalent substances such as h2, co2 and o2; more atoms are present as they are arranged into the giant lattices that’s why they have a strong structure because there are more bonds. Macromolecules have a high melting point this is due to having a lot of covalent bonds to be broken small …show more content…
• Ionic substances have different properties from covalent substances, ionic substances make giant ionic lattices that have high melting/boiling points they can conduct electricity when it’s melted or dissolved (water). They have a high melting/boiling point this is because the ionic bonds are strong so a lot of energy is required to break them so this is why it has a high melting/boiling point. They can conduct electricity because the ionic compounds can conduct electricity whether they are solid or dissolved or melted.
• Covalent substances have strong covalent bonds so lots of energy is required to break them, substances that have covalent bonds form molecules with low melting/boiling points. Giant covalent structures have more than one atom so they make a giant lattice which then leads to having a high melting/boiling point. Graphite can conduct electricity due to having free electrons. Covalent substances do not conduct electricity unlike ionic substances this is because covalent substances do not have free ions or electrons therefore they cannot conduct
• Simple covalent substances will only contain a few atoms that are held by strong covalent bonds for example co2 the molecules contain one atom of carbon that is bonded with 2 oxygen atoms. The intermolecular forces causes the small covalent structures to have a low melting/boiling points, they don’t conduct electricity because they don’t have any free electrons or an electric charge overall.
• Macro molecules will have large covalent structure compared to the small covalent substances such as h2, co2 and o2; more atoms are present as they are arranged into the giant lattices that’s why they have a strong structure because there are more bonds. Macromolecules have a high melting point this is due to having a lot of covalent bonds to be broken small …show more content…
• Ionic substances have different properties from covalent substances, ionic substances make giant ionic lattices that have high melting/boiling points they can conduct electricity when it’s melted or dissolved (water). They have a high melting/boiling point this is because the ionic bonds are strong so a lot of energy is required to break them so this is why it has a high melting/boiling point. They can conduct electricity because the ionic compounds can conduct electricity whether they are solid or dissolved or melted.
• Covalent substances have strong covalent bonds so lots of energy is required to break them, substances that have covalent bonds form molecules with low melting/boiling points. Giant covalent structures have more than one atom so they make a giant lattice which then leads to having a high melting/boiling point. Graphite can conduct electricity due to having free electrons. Covalent substances do not conduct electricity unlike ionic substances this is because covalent substances do not have free ions or electrons therefore they cannot conduct