General Chemistry 1 Review Exam S.Y 2023-2024
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Questions and Answers

What was Democritus’ atomic theory based on?

  • Observation using a microscope
  • Mathematical calculations
  • Philosophical reasoning (correct)
  • Experimental evidence

According to Democritus, how do atoms differ from one another?

  • Mass, size and shape (correct)
  • Size only
  • Mass only
  • Shape only

What was the primary aim of alchemists in their pursuit of the philosopher’s stone?

  • Invisibility
  • Flight
  • Transmutation of base metals into gold (correct)
  • Immortality

Which significant concept did alchemists contribute to early chemistry?

<p>Transmutation of Elements (D)</p> Signup and view all the answers

What did John Dalton propose about atoms?

<p>They are indivisible particles (D)</p> Signup and view all the answers

According to Dalton, atoms of different elements have?

<p>Same Mass (C)</p> Signup and view all the answers

Which of the following ancient Greek philosophical schools focused on materialism and atomism, to which Democritus belonged?

<p>Stoicism (B)</p> Signup and view all the answers

Who coined the statement 'To understand the very large, we must understand the very small'?

<p>Democritus (C)</p> Signup and view all the answers

What was Aristotle's idea about atoms?

<p>Every substance had its own kind of 'seeds' that clustered together to make the substance, much as our atoms cluster to make molecules. (C)</p> Signup and view all the answers

What did Dalton propose about the Conservation of Mass in Chemical reactions?

<p>Mass is always conserved (A)</p> Signup and view all the answers

Who proposed the idea of the nucleus in an atom?

<p>Ernest Rutherford (B)</p> Signup and view all the answers

What did Rutherford’s gold foil experiment reveal about the atom?

<p>Atoms are mostly empty space with a small, dense nucleus (D)</p> Signup and view all the answers

Which particle was discovered by J.J Thomson?

<p>Electron (C)</p> Signup and view all the answers

According to Democritus, what is the fundamental nature of matter?

Signup and view all the answers

'Atomos' is a term used by Democritus for what fundamental particles?

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Which of the following is NOT a property of atom according to Democritus?

<p>The heart is the seat of desire. (D)</p> Signup and view all the answers

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