liquid or gases
solid
Gases.
Solid.
they would be solids at room temperature.
Hydrogen bonds are weak bonds that are not strong enough to hold atoms together to form molecules but are strong enough to form bonds within and around large molecules.
Many covalent compounds are what chemists describe as volatile substances, which are relatively easy to either melt or boil. Covalent bonds are not as strong as ionic bonds, so with ionic bonds, you get compounds that are very hard to melt and even harder to boil, so we therefore know them mostly as solids (or as solutes). We do melt sand to make glass, but it takes an extremely high temperature. The other large bonding category is the metallic bond. These can be quite strong and can also result in very high melting points, but they vary. We also get the element mercury, which has a metallic bond but which is liquid at room temperature.
Organic compounds with single bonds have saturated bonds. Unsaturated bonds are double or triple bonds. Compounds with saturated bonds have the maximum number of atoms that can be bond.
Concrete is made of covalent compounds with strong bonds. Non-metals and metals form ionic compounds only.
they would be solids at room temperature.
Solid
Hydrogen bonds are weak bonds that are not strong enough to hold atoms together to form molecules but are strong enough to form bonds within and around large molecules.
Carbon dioxide cannot make strong enough bonds between the molecules to be a liquid or a solid, in the room temperature and pressure.
Covalent netweork compounds are held together generally by strong covalent bonds and therefore melting them takes a lot of thermal energy.
Ionic bonds are very strong attractive forces that act in all directions betwen oppositely charged ions. It takes a lot of thermal energy to break these bonds, so at room temperature (approximately 20-25oC), the ionic compounds are held together in the solid phase by these strong bonds.
Many covalent compounds are what chemists describe as volatile substances, which are relatively easy to either melt or boil. Covalent bonds are not as strong as ionic bonds, so with ionic bonds, you get compounds that are very hard to melt and even harder to boil, so we therefore know them mostly as solids (or as solutes). We do melt sand to make glass, but it takes an extremely high temperature. The other large bonding category is the metallic bond. These can be quite strong and can also result in very high melting points, but they vary. We also get the element mercury, which has a metallic bond but which is liquid at room temperature.
Usually different compounds have a specific freezing, melting, and boiling point. There are all types of different compounds out in the world but it also depends on their intermolecular forces. In weak bonds, volatility and pressure is high, while boiling point is low. In strong bonds, volatility and pressure is low, while boiling point is high.
Organic compounds with single bonds have saturated bonds. Unsaturated bonds are double or triple bonds. Compounds with saturated bonds have the maximum number of atoms that can be bond.
Concrete is made of covalent compounds with strong bonds. Non-metals and metals form ionic compounds only.
Compared to ionic compounds, covalent compounds have relatively low melting and boiling points because covalent bonds are not as strong as ionic bonds, and it is the bonds which hold materials together in the solid, or more solid phases.
Sometimes the bonds are strong. On the other hand, however, nitroglycerin is notorious for having breakable bonds. There is a class of compounds called "nonexistent". Their bonds break quickly.