Podcast
Questions and Answers
Who first proposed the concept of atoms?
Who first proposed the concept of atoms?
- Isaac Newton
- John Dalton
- Leucippus and Democritus (correct)
- Aristotle
What is the Greek word for 'indivisible'?
What is the Greek word for 'indivisible'?
- Elementos
- Atomos (correct)
- Matteros
- Indivisiblos
According to Dalton's Atomic Theory, what is matter composed of?
According to Dalton's Atomic Theory, what is matter composed of?
- Exceedingly small particles called molecules
- Exceedingly small particles called protons
- Exceedingly small particles called atoms (correct)
- Exceedingly small particles called electrons
According to Dalton's Atomic Theory, what is the smallest unit of an element that can participate in a chemical change?
According to Dalton's Atomic Theory, what is the smallest unit of an element that can participate in a chemical change?
Which Greek philosopher proposed the concept of atoms along with Leucippus?
Which Greek philosopher proposed the concept of atoms along with Leucippus?
What did Aristotle and others believe matter consisted of?
What did Aristotle and others believe matter consisted of?
According to Dalton’s Atomic Theory, which postulate states that atoms of one element differ in properties from atoms of all other elements?
According to Dalton’s Atomic Theory, which postulate states that atoms of one element differ in properties from atoms of all other elements?
In Dalton’s Atomic Theory, which postulate explains that a compound consists of atoms of two or more elements combined in a small, whole-number ratio?
In Dalton’s Atomic Theory, which postulate explains that a compound consists of atoms of two or more elements combined in a small, whole-number ratio?
According to the Law of Conservation of Matter (Mass), what happens during a chemical change?
According to the Law of Conservation of Matter (Mass), what happens during a chemical change?
Which experiment by French chemist Joseph Proust illustrates the Law of Definite Proportions (Constant Composition)?
Which experiment by French chemist Joseph Proust illustrates the Law of Definite Proportions (Constant Composition)?
What does Dalton’s Atomic Theory postulate about atoms during a chemical change?
What does Dalton’s Atomic Theory postulate about atoms during a chemical change?
Which element has atoms with a characteristic mass of 55.847 atomic mass units?
Which element has atoms with a characteristic mass of 55.847 atomic mass units?
What is the characteristic mass of Carbon atoms according to the provided text?
What is the characteristic mass of Carbon atoms according to the provided text?
In a given compound according to Dalton's Atomic Theory, what is always present in the same ratio?
In a given compound according to Dalton's Atomic Theory, what is always present in the same ratio?
'Atoms are neither created nor destroyed during a chemical change, but instead rearrange to yield a different type(s) of matter.' Which law or postulate does this statement reflect?
'Atoms are neither created nor destroyed during a chemical change, but instead rearrange to yield a different type(s) of matter.' Which law or postulate does this statement reflect?
'Every water molecule has exactly two hydrogen (H) atoms for every one oxygen (O) atom, always in a 2:1 ratio.' Which compound does this statement describe?
'Every water molecule has exactly two hydrogen (H) atoms for every one oxygen (O) atom, always in a 2:1 ratio.' Which compound does this statement describe?
