Activity 2: Refer to the chart below on physical properties of matter. Answer the questions and relate the intermolecular forces present among the species to explain the different properties exhibited by the substances.

Melting and Boiling Points
Substance
Molar Mass, g/mol
Melting Point, K
Boiling Point, K

Fluorine (F2)

38

53

85

Bromine (Br2)

160

266

332

Astatine (At2)

420

575

610

Which substance has the highest melting and boiling points?
What intermolecular forces of interactions are present in each of the substances?
How do the intermolecular forces present relate to the size of the substance?
How do the strength of the intermolecular forces present in each species compare to each other?
How does the strength of the intermolecular forces relate to the boiling and melting points of the substances?

Question

Answered

Sagot :

AmongUs1234go AmongUs1234go · Answer 1

1. Tungsten

2. Dipole–dipole interactions

London dispersion forces

Hydrogen bonds.

3. The larger the molecule, the greater the dispersion forces.

4. Substances that have strong intermolecular forces are very attracted to one another and are tightly held together.

5. Substances with high IMF will have higher melting and boiling points. It will require more energy to break the IMF.

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Marygrace088go Marygrace088go · Answer 2

1. Which substance has the highest melting and boiling points?

2. What intermolecular forces of interactions are present in each of the substances?

3. How do the intermolecular forces present relate to the size of the substance?

4. How do the strength of the intermolecular forces present in each species compare to each other?

Substance that have strong intermolecular forces are very attracted to one another and tightly held together.

5. How does the strength of the intermolecular forces relate to the boiling and melting points of the substances?

The substances with high IMF will have higher melting and boiling points. It will require more energy to break the IMF.