The mass of a proton is approximately equal to the mass of

If a color change occurs when two solutions are mixed is it true that a chemical react has probably taken place?

If you have an element with 46 protons and 44 electrons, the net charge of the element is A. 0 B. + 2 C. - 2 D. not enough information

Sara Lilia pulled out four different cds

The continental crust is considered to be rich in iron and magnesium. What conclusion can you reach about the amounts of these elements that are necessary to enrich a substance? Explain.

Which formula correctly represents the product of an addition reaction between ethene and chlorine?

Dalton's atomic theory

Describe how food is digested and absorbed

If a solution A has twice as much solute as solution B. Is it possible for the solutions to have the same concentration?

Chris is studying oxidation and reduction reactions. Which of the following could she use as an example of an oxidation reaction?

In a short circuit as the resistance decreases what happens to the current?