Question

1. in redox reactions, what always happens to oxidizing agents?

2. what is the diinition of a physical property, and how it is used?

3.what is the definition of a chemical reaction, and how is it used?

4. if you are given an unknow liquid that can be either water or hydrocarbon, and the sample is clear, no color, and has no odor. what test would you use for it chemical or physical (and what will you see in the test to prove of support this answer)?

Answer 1

1.An oxidizing agent oxidizes other substances and gains electrons; therefore, its oxidation state decreases.

2.A physical property is any property that is measurable whose value describes a state of a physical system. The changes in the physical properties of a system can be used to describe its transformations or evolutions between its momentary states

3.The substance (or substances) initially involved in a chemical reaction are called reactants or reagents. Chemical reactions are usually characterized by a chemicalchange, and they yield one or more products, which usually have properties different from the reactants..

4.we can do solubility test and density test .if it is hydrocarbon it will not soluble in polar solvents like ethyl alcohol, water

density is more for water .if the liquid is mixed with water immediately it floats on top if it is hydrocarbon . hydrocarbons density is lessthan that of water