Achange in the properties of matter that does not change the makeup of the substance is

a chemical change

a physical change

a nuclear change

a covalent change

Order the following from smallest to largest atom, electron, quark, proton, neutron, molecule, nucleus

Which of these properties, used alone, would be least useful in identifying most minerals? a. color b. luster c. streak d. density

Nitrogen (n), phosphorus (p), and potassium (k) are the main nutrients in plant fertilizers. according to an industry convention, the numbers on the label refer to the mass percents of n, p2o5, and k2o, in that order. calculate the n: p: k ratio of a 30: 10: 10 fertilizer in terms of moles of each element, and express it as x: y: 1.0.