Dalton's Vision: The Birth of Atomic Theory

The video tutorial covers John Dalton's atomic theory, which proposed that all matter is composed of indivisible atoms. It explains the concept of elements and compounds, highlighting how atoms of different elements combine to form compounds. The tutorial also discusses chemical reactions as processes involving the rearrangement of atoms. Finally, it addresses the limitations of Dalton's theory, noting that atoms are divisible into subatomic particles like electrons, protons, and neutrons, as demonstrated by experiments.

What did Dalton propose about the nature of matter?

• Matter is composed of continuous substances.

• Matter is composed of energy waves.

• Matter is composed of tiny, indivisible particles called atoms.

• Matter is composed of large, visible particles.

How are compounds formed according to Dalton's theory?

• By combining atoms of different elements in fixed proportions.

• By dissolving elements in water.

• By mixing elements in any proportion.

• By heating elements together.

What happens during a chemical reaction as per Dalton's theory?

• Atoms remain unchanged.

• Atoms are combined, separated, or rearranged.

• Atoms are created.

• Atoms are destroyed.

What discovery contradicted Dalton's idea of indivisible atoms?

• Atoms are made of energy.

• Atoms are composed of subatomic particles like electrons, protons, and neutrons.

• Atoms are made of light.

• Atoms can be split into smaller atoms.

What does the experiment with glass rods and silk cloth demonstrate?

• Atoms contain subatomic particles like electrons.

• Atoms are made of light.

• Atoms are indivisible.

• Atoms are made of energy.