Which of the following does not describe elements?

A. They are uniform throughout.

B. They can be separated by a chemical reaction.

C. They cannot be separated by physical means.

D. They are listed on the periodic table.

What is the oxidation state of an individual sulfur atom in mgso4?

Does the speed of light depend on air temperture

The outcome of scientific processes based on analysis

When approaching a problem, scientists follow a few basic steps. list, in prefer, the basic steps scientists follow when trying to solve a problem

Calculate the gas constant, R, if 25.55 mL of hydrogen gas was collected at a barometric pressure of 0.987 atm and a temperature of 295 K. The vapor pressure of water at this temperature is 0.026 atm.

Which atom has a change in oxidation number of - 3 in the following redox reaction K2Cr2O7 + H2O + S - - > KOH + Cr2O3 + SO2

Why does fluorine have a higher electronegativity than lithium?

What mineral is this? Irregularly shaped, white with nonmetallic luster, the hardness of 2.5, shows cubic cleavage and dissolves easily in water.

The passage of the USA Patriot Act of 2001 and the creation of the Department of Homeland Security reflect the determination of the United States government to (1) search for weapons of mass destruction in South Asia (2) increase the globalization

Is it possible for 2 different elements to have the same atomic number