Question

conductivity and luster
metals are good conductors of both heat and electricity. thermal conductivity is a materials ability to conduct heat. electrical conductivity is a materials ability to conduct electricity. these properties make metals highly useful for cookware (pots and pans) and electronics. another unique property of metals is their shiny appearance. the way light interacts with a materials surface is called luster. light causes the free electrons in metals to move and then the excited electrons re - emit the light, which is why metals arent transparent and look shiny. this property makes metals highly valued in jewelry making.
thermal conductivity
electrons can carry energy in the form of heat. because the electrons in metal can move around, they conduct heat more easily than ionic solids or covalent network solids.
a warm air molecule transfers energy to the metal.
electrical conductivity
electric current is the movement of electrons. the delocalized electrons in metals can easily move, making metals more conductive than ionic solids.
the battery \pushes\ the electrons in one direction, creating an electric current in the metal.
27 sep develop a model does a rumor spread faster in a gym where all of the students can move around freely, or in a classroom where students are confined to desks? develop an analogy for the difference in conductivity between metals and ionic solids.

Explanation:

Step1: Analyze the movement - related concept

In metals, free - moving electrons enable high conductivity. In the analogy, free - moving students in a gym are like free - moving electrons in metals, and students confined to desks are like electrons in ionic solids.

Step2: Consider the spread rate

A rumor will spread faster in a gym where students can move freely because they can interact with more people quickly, just as free - moving electrons in metals can conduct heat and electricity more easily. In a classroom where students are confined to desks, the spread is slower as interactions are more limited, similar to the lower conductivity of ionic solids.

Answer:

A rumor spreads faster in a gym where students can move around freely. The analogy is that free - moving students in a gym are like the free - moving electrons in metals that give metals high conductivity, and students confined to desks in a classroom are like the less mobile electrons in ionic solids resulting in lower conductivity.