Question

what is matter? tips for success • read the assignment carefully and make sure you answer each part of the question or questions. • after youve written your response, go back and read it again to make sure your thoughts are clear. your assignment methane is a colorless gas, and diamond is a hard solid. a methane molecule is made of one carbon atom surrounded by four hydrogen atoms. diamond is an extended structure made of carbon atoms connected in a repeating pattern. draw a model of a few methane molecules and a model of the extended structure in diamond. use your model to explain whether methane and carbon are pure substances, such as compounds or elements, or are mixtures. methane diamond use the \insert image\ button to upload your model.

Explanation:

Step1: Draw methane model

A methane molecule ($CH_4$) has a central carbon atom bonded to four hydrogen atoms in a tetrahedral - like structure. You can represent the carbon atom as a central dot or sphere and the hydrogen atoms as smaller dots or spheres connected to the carbon by lines representing covalent bonds. Draw a few of these individual $CH_4$ molecules.

Step2: Draw diamond model

Diamond has a three - dimensional, repeating network of carbon atoms. Each carbon atom is covalently bonded to four other carbon atoms in a tetrahedral arrangement. You can draw a simple representation of this extended structure, showing a few carbon atoms connected in a three - dimensional lattice.

Step3: Determine substance type of methane

Methane is a pure substance, specifically a compound. It is made up of two different elements (carbon and hydrogen) chemically combined in a fixed ratio ($1$ carbon : $4$ hydrogens). All $CH_4$ molecules are identical.

Step4: Determine substance type of carbon in diamond

Diamond is a pure substance, an element. It consists of only carbon atoms. All the atoms in diamond are of the same element, carbon, and there are no other elements or substances mixed in.

Answer:

Methane is a compound (a pure substance) as it is made of carbon and hydrogen chemically combined. Diamond is an element (a pure substance) as it consists only of carbon atoms. The models would show the distinct molecular and extended - structure nature of methane and diamond respectively.