Exploring the Building Blocks of Matter: the Modern Atomic Theory

In the early 1800s, John Dalton, a British chemist, conducted experiments that led to the discovery that elements are composed of specific types of atoms. He introduced the atomic theory, which stated that atoms are indivisible and indestructible, and that atoms of the same element are identical, while those of different elements differ. Dalton also explained that compounds form when atoms of different elements combine. Over time, the atomic theory has evolved with new scientific discoveries, leading to the modern understanding of atomic structure.

Who was the British chemist that discovered elements are made of specific types of atoms?

• Isaac Newton

• Marie Curie

• John Dalton

• Albert Einstein

According to Dalton's atomic theory, what is the nature of atoms?

• Atoms can be divided into smaller parts

• Atoms are constantly changing

• Atoms are made of protons and neutrons

• Atoms are indivisible and indestructible

What did Dalton propose about atoms of the same element?

• They are different from each other

• They are exactly alike

• They can transform into atoms of another element

• They are larger than atoms of other elements

How are compounds formed according to Dalton's theory?

• By combining atoms of two or more different elements

• By splitting atoms into smaller parts

• By combining atoms of the same element

• By mixing elements in any proportion

What has happened to atomic theory over time?

• It has been proven incorrect

• It has been developed and expanded

• It has been discarded

• It has remained unchanged