Which scientists was the first to practice the scientific method we use today

What 3 atoms have eight valence electrons

Explain in a situation in which the reactant might weigh more than the product

The bright-line spectrum of an element in the gaseous phase is produced as (1) protons move from lower energy states to higher energy states (2) protons move from higher energy states to lower energy states (3) electrons move from lower energy

For a star of sun-like mass, what is the last stage of the nuclear fusion? a. hydrogen to helium b. helium to carbon and oxygen c. fusion goes all the way up to iron. d. carbon to magnesium

Commercially available concentrated sulfuric acid is 17.2M. Calculate the volume of concentrated sulfuric acid required to prepare 5.00 L of 2.50M solution.

Is lead a mixture or pure substance? and is Paint a mixture or pure substance?

Which of the following is NOT a factor in determining how quickly a solute will dissolve into a solvent? A. temperature B. surface area C. agitation D. vapor pressure

Which state of matter would demonstrate the best ability to flow/pour? explain using the term particles

What is the natural process by which yeast converts sugar into carbon dioxide and alcohol called?

What is the kinetic energy of a 55 kg girl walking at a velocity of 2m/s?