Which Greek thinker proposed that matter consists of tiny, indivisible particles?

What does the Greek word atomos mean?

Which evidence supported Dalton's atomic theory in the early 1800s?

Which scientist is associated with the historical model shown?

A chemical reaction occurs in a sealed container with no leaks. How should the total mass before and after compare?

A pure compound contains 2 g hydrogen for every 16 g oxygen. Which other sample is consistent with the law of definite proportions?

Which pair of compounds can demonstrate the law of multiple proportions?

Whose cathode-ray experiments overturned the claim that atoms were indivisible?

Use the beam's path to identify which deflecting plate is positively charged.

Which historical model is shown in the diagram?

A class uses maja blanca as the continuous base of an edible atomic model. What do corn kernels scattered through the base represent?

Which electron property was measured in Millikan's oil-drop experiment?

Which scientist proposed an atomic model based on gold-foil scattering?

What does the most common projectile path in the diagram suggest about atoms?

What does the rare reversal shown suggest about the region responsible for strong scattering?

Which scientist is credited with discovering the uncharged nuclear particle?

For an atom with no net electric charge, how do the counts of its positive and negative particles compare?

Which subatomic particle has a relative charge of +1 and a mass of about 1 atomic mass unit?

Which pair supplies most of an atom's mass?

Arrange the pictured models from earliest to latest development.