Where are the protons and neutrons and electrons located in an atom?

When does a scientists create the conclusion

Is it always possible to identify something as an element compound pure substance or mixture just by looking at it

What is the most used element in the periodic table? what are its uses?

What is the most appropriate unit of astronomical distance to represent the distance between an earth an orbiting space station and neptune?

Which particle has a mass that is approximately equal to the mass of a proton

Be sure to answer all parts. select the three most acidic hydrogen atoms in lactic acid, ch3ch (oh) co2h, and rank them in order of decreasing acidity. explain your reasoning.

List the elements that produced the most easily identified colors?

What is the result of mixing the two substances shown here together?

Which reaction should be used to convert propene into alkyl halide

What does a coefficient represent in a chemical formula? How do you use the coefficient to calculate the number of atoms in each molecule?