Ancient Greek Philosophers and Atomic Theory

Who proposed one of the first theories that attempted to describe the things around us, suggesting that all matter was composed of four elements: fire, air, water, and earth?

• Democritus

• Leucippus

• Anaxagoras

• Empedocles

What was the unique concept introduced by Democritus about the nature of matter?

According to the text, what was a significant problem with Empedocles's theory?

• It accurately described the properties of all materials.

• It could not explain why different materials had different properties.

• It suggested that all materials were soft and life-like.

• It was fully supported by scientific testing.

Who proposed the theory that air had weight and could push down on a column of liquid mercury, leading to the invention of the barometer?

• Antoine Lavoisier

• Evangelista Torricelli

• Joseph Priestley

• Daniel Bernoulli

What did Joseph Priestley discover when he experimented with mercury calx and heat?

• The formation of a colorless, odorless gas

• The transformation into a solid metal

• The creation of a new element

• The reduction of mercury into a liquid state

According to Lavoisier, what is formed when phlogiston and oxygen react?

• Hydrogen

• Water

• Carbon dioxide

• Methane

What law did Lavoisier establish based on his observations of mass in chemical reactions?

• Law of Definite Proportions

• Law of Conservation of Mass

• Law of Multiple Proportions

• Law of Conservation of Energy

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Who developed the first modern atomic theory?

• Priestley

• Lavoisier

• Dalton

• Rutherford

What did John Dalton propose in his atomic theory regarding the nature of all matter?

• All matter is composed of indivisible particles called atoms.

• All matter is continuously divisible into smaller parts.

• All matter is a combination of various gases.

• All matter can transform from solid to gas without being a liquid.

Tags

NGSS.HS-PS1-7

According to Dalton's atomic theory, how are atoms of a given element described in comparison to atoms of different elements?

• Atoms of a given element are identical and different from atoms of other elements.

• Atoms of a given element are always larger than atoms of other elements.

• Atoms of a given element are always more reactive than atoms of other elements.

• Atoms of a given element can change into atoms of another element.