Sebastian wants to write the chemical formula for phosphorus tetraoxide. which steps will he take at some point in his process? check all that apply. identify the elements involved as potassium and oxygen identify the symbols as p and o write the chemical symbols, in order, as op use the prefix tetra before oxygen add a subscript of 4 after the o

Explanation:

A chemical formula is defined as symbolic representation of a molecule or compound.

The number present as a subscript in a chemical formula depicts the number of atoms of each element present in the compound.

For example, chemical formula of phosphorous tetraoxide is .

The symbol P represents the element phosphorous and symbol O represents the element oxygen.

Since, 4 atoms of oxygen are involved. Therefore, a prefix "tetra" is mentioned. And, a suffix "-ide" is placed at the end of oxygen and it will be written as an oxide.

This means that tetra is placed before oxide and not before the word oxygen.

Thus, we can conclude that steps taken by Sebastian at some point in his process are as follows.

answer is: c. the experiment shows that the red substance experienced a chemical change.

this is chemical change (chemical reaction), because two new substances are formed (metalig liquid and gas), the atoms are rearranged and the reaction is followed by an energy change.

this is example of chemical decomposition.

chemical decomposition (analysis) is the separation of a single chemical compound into its two or more elemental parts or to simpler compounds.  

chemical decomposition is opposite of chemical synthesis.

space exploration has led to the development and technological improvement of many everyday items. (if this answer is wrong i will find the right answer) : )