Which substance can not be broken down by a chemical change?

(1) methane (3) tungsten

(2) propanal (4) water

Example of false solutions and true solutions

A compound held together by ionic bonds is called a salt covalent molecule diatomic molecule polar compound

The frog population in the Amazon basin varied. every 500 years there was a mutational change leading to speciation. in between the population remained the same with no observable changes. What pattern of macroevlution determined this change?

If a sample of a different compound decomposes into 0.429 g of carbon and 0.571 g of oxygen, what is its ratio of the mass of o to c

Which best explains the relationship between parent rock and soil composition?

As the speed of a particle increases, does its associated wavelenght increase or decrease

The composition of air by volume is approximately 1/5 oxygen, 4/5 nitrogen. When air is passed through red-hot carbon, the following reaction occurs: 2C + O2 (g) 2CO (g).

How many atomic mass units are equal to 1.672*10-24 g of protons?

What is the name of the compound Sr3N2?

The water softener discussed here relies on precipitation softening also known as ion exchange. based o hte reactants used, what ions would remain in the softened water thaat would be consumed buy the homeowners