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Questions and Answers
Who proposed the existence of atoms as the fundamental building blocks of matter?
Who proposed the existence of atoms as the fundamental building blocks of matter?
- Twentieth-century chemists
- Nineteenth-century scientists
- Early Indian and Greek philosophers (correct)
- Modern physicists
What is the origin of the word 'atom'?
What is the origin of the word 'atom'?
- Sanskrit word 'a-tama' meaning 'invisible'
- Arabic word 'atoom' meaning 'fundamental'
- Latin word 'atomus' meaning 'indivisible'
- Greek word 'a-tomio' meaning 'uncut-able' (correct)
What did the early Indian and Greek philosophers believe about atoms?
What did the early Indian and Greek philosophers believe about atoms?
- Atoms are divisible into smaller particles
- Atoms can be destroyed by chemical reactions
- Atoms are made up of protons, neutrons, and electrons
- Atoms are the fundamental building blocks of matter (correct)
When were the earlier ideas about atoms revived again by scientists?
When were the earlier ideas about atoms revived again by scientists?
What is the main characteristic of atoms according to the Indian and Greek philosophers?
What is the main characteristic of atoms according to the Indian and Greek philosophers?
Which scientist proposed the atomic model that describes the atom as a positively charged 'pudding' with negatively charged electrons embedded throughout?
Which scientist proposed the atomic model that describes the atom as a positively charged 'pudding' with negatively charged electrons embedded throughout?
What is the key feature of the quantum mechanical model of the atom?
What is the key feature of the quantum mechanical model of the atom?
Which principle states that no two electrons in an atom can have the same four quantum numbers?
Which principle states that no two electrons in an atom can have the same four quantum numbers?
What did Planck's quantum theory explain about the nature of electromagnetic radiation?
What did Planck's quantum theory explain about the nature of electromagnetic radiation?
According to the de Broglie relation, what is associated with moving particles such as electrons?
According to the de Broglie relation, what is associated with moving particles such as electrons?
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