Why could some minerals be similar in color yet completely different in composition?

Hydrogen peroxide breaks down into water and oxygen, explain why this is a chemical reaction

What is the percent cr, by mass, in the steel sample? express your answer numerically as a percentage?

The number of positive charges in the nucleus of an atom is equal to

The periodic law states that the physical and chemical properties tend to repeat periodically when elements are arranged according to what trend

9. In a sample of gas, what causes pressure? Answer in a completesentence.

Do amides or amines react with water?

What one characteristic of an atom determines what type of element it is

Problem page write a balanced half-reaction for the reduction of solid manganese dioxide mno2 to manganese ion mn 2 in acidic aqueous solution. be sure to add physical state symbols where appropriate.

What best describes measuring with a graduated cylinder?

The top layer of a flat lying sedimentary rock is the ...