- Heating Curve
- Shows how the temperature and phase of a substance change when heat is ABSORBED at a CONSTANT rate over a period of time
- The first change is melting (the changing from a solid to a liquid)
- Temperature stays the same while substance melts
- The second change is boiling (the change from a liquid to a gas)
- Temperature stays the same while substance boils
- The first change is melting (the changing from a solid to a liquid)
- Different substances have different melting and boiling points, but the shapes are the SAME shape
- Shows how the temperature and phase of a substance change when heat is ABSORBED at a CONSTANT rate over a period of time
- Intermolecular Forces
- The forces that occur between molecules
- Ion-Dipole
- Occurs when ions interact with POLAR molecules
- The charged ions are attracted to the dipole with the opposite partial charge
- Dipole-Dipole
- Occurs between the positive end of the POLAR molecule and the negative end of another POLAR molecule
- Weaker than ionic and covalent bonds
- Have a significant effect only when the molecules are close together
- London Dispersion
- Weakest Intermolecular Force between two atoms in close proximity of each other
- The force is generated when electrons repulsion is between the electron clouds or two atoms as they approach each other
- Ion-Dipole
- The forces that occur between molecules