Dipole/ion dipole
Is there a strong or weak attraction of hydrogen atoms between the water molecules in a liquid?
there is a strong attraction
Do London dispersion forces have a strong or weak attraction?
weak attraction
The formula for density.
D = M/V
Hydrogen bonding is a type of
strong intermolecular force
When do dispersion forces occur?
Occur between all molecules. Most important between nonpolar molecules
What are the weakest Intermolecular forces?
London Dispersion Forces (LDF)
Van Der Waals (VDW)
What if mass increases but volume stays the same?
Density increases
When do hydrogen bonds occur?
These occur between polar covalent molecules that possess a hydrogen atom bonded to an extreme electronegative element.
At room temperature, F2 and Cl2 are gases, Br2 is a liquid, and I2 is a solid. This is because:
London dispersion interactions increase with molecular size
What are types of intermolecular forces?
Dipole-Dipole/Hydrogen Bonding, London Dispersion Forces, Ion-Ion, Ion-Dipole, Dipole-Induced Dipole
Wilbur has 34.3g of a solid, and it takes up a 2cm by 3cm by 5cm space. What is the density?
1.1433g/cm3
Where are the strongest hydrogen bonds?
Between molecules containing F-H bonds
What happens to molecules as the intermolecular forces increase?
The stronger the intermolecular forces, the more likely to be in liquid and solid states.
A substance with a density of 1.83kg/L is dropped into a large tank with 300L, and the water level rises to 326.7L. What is the mass?
48.681kg
What effect does H-bonding have on the properties of the substance?
Hydrogen bonding leads to substantial increases in the expected boiling point, viscosity, etc.
What happens to the force when the molecule is bigger?
the force is stronger
The boiling point of CH4 is much lower than that of HF. This is because:
of dipole-dipole/hydrogen bonding in HF
Why do things float in water?
Their density is less than water which has a density of 1g/mL