Atomic Theory and Models Assessment

Front

What did Democritus call the tiny, indestructible particles that make up everything?

Back

Atomos

Front

How did Democritus explain the properties of materials like sourness or hardness?

Back

Based on the shape of the atomos

Front

What were the four elements Aristotle believed everything on Earth was made of?

Back

Earth, Fire, Water, Air

Front

What law did John Dalton's experiments with gases lead to?

Back

Law of Multiple Proportions

Front

According to Dalton's atomic theory, what were atoms described as?

Back

Indestructible, solid spheres

Front

What did Dalton propose about atoms of different elements?

Back

They combine in fixed ratios to form compounds

Front

Who discovered electrons using the cathode ray tube experiment?

Back

J.J. Thomson

Front

What was J.J. Thomson's atomic model called?

Back

Plum Pudding Model

Front

How did the Plum Pudding Model characterize an atom?

Back

A ball of positive charge with embedded negative electrons

Front

What was the name of the experiment Ernest Rutherford conducted to probe the structure of an atom?

Back

Gold Foil Experiment