Why does sodium melt at 98 degrees

For example:. A substance with a high density means it has a high mass for its size. For example, the volume of liquid in a can of drink is cm 3. Malleable substances can be bent or hammered into shape without shattering, while brittle substances shatter when bent or hit. Metals are described as ductile because they can be drawn out into thin wires. When a metal melts or boils, this is a change of physical state. Energy is transferred to a substance to melt or boil it.

This energy is needed to overcome the forces of attraction between the metal ions and the delocalised electrons in the metal. The more energy needed, the higher the melting point or boiling point. Use the link below to answer the following questions. Skip to main content. States of Matter. Search for:. Melting Point Learning Objectives Define melting point. Describe the process of particle movement in melting. Describe the forces that influence the melting point of a material.

Examples Have you ever gone ice skating? Key Takeaways Summary The melting point is the temperature at which a solid changes into a liquid. Intermolecular forces have a strong influence on melting point. How can we use melting point data to help identify a compound? How can we use melting points to assess the purity of a compound?

Exercises Review Questions Define melting point. Explanation: In Period 3 of the Periodic Table , the 3s and 3p orbitals are filled with electrons. Related questions How do I determine the molecular shape of a molecule?

What is the lewis structure for co2? What is the lewis structure for hcn? How is vsepr used to classify molecules? What are the units used for the ideal gas law? How does Charle's law relate to breathing?