Astudent recorded the following while completing an experiment. color of substance: yellow, shiny powder effect of magnet: yellow, shiny powder was attracted the student should classify the substance as a(n)

a. element.
c. mixture.
b. compound.
d. plasma.

The answer is letter b, mixture.

Explanation:

Let's define what a mixture is at first.

Mixture- In Chemistry, mixture is a material made up of two or more different substances that are physically combined. The identities of the substances are retained. There are two types of mixture: homogenous and heterogenous.

Homogenous mixture examples: saline solution and air.

Heterogenous mixture examples: sand and oil and water.

The student's record shows the color of the substance as yellow, shiny powder. It could mean that the substance is a mixture of different kinds of powders. This is already a hint, since powder is a form of mixture. The record also shows that the substance is attracted to magnet. Part of the powder mixture contains something that is attracted to magnet. It could be an iron powder, which is the shiny one. The substance can then be classified as letter b, mixture.  

conduction is the transfer of thermal energy (heat in transfer) due to collisions between the molecules in the object. collisions between adjacent atoms and molecules transfer kinetic energy from the warmer to the cooler object. the objects must be in physical contact.