Podcast
Questions and Answers
According to Dalton's Atomic Theory, which statement is true about atoms of the same element?
According to Dalton's Atomic Theory, which statement is true about atoms of the same element?
- They are identical (correct)
- They have different chemical properties
- They differ in mass
- They vary in size
What is the key concept in the Law of Multiple Proportions?
What is the key concept in the Law of Multiple Proportions?
- Elements can form multiple compounds with different ratios (correct)
- Ratios of atoms in compounds are always whole numbers
- Atoms can be divided into smaller particles
- Elements combine in fixed ratios to form compounds
In Rutherford's Experiment, what did the discovery of the nucleus reveal about atoms?
In Rutherford's Experiment, what did the discovery of the nucleus reveal about atoms?
- Atoms have negative charge concentrated in the nucleus
- Atoms are indivisible and cannot be broken down
- Atoms consist mostly of empty space with a dense nucleus (correct)
- Protons carry the positive charge of the atom
Which scientist measured the mass and charge of an electron using a Cathode Ray Tube?
Which scientist measured the mass and charge of an electron using a Cathode Ray Tube?
What did Millikan's Experiment determine about the charge of an electron?
What did Millikan's Experiment determine about the charge of an electron?
What did Thomson's Model of the atom propose regarding the distribution of positive charge?
What did Thomson's Model of the atom propose regarding the distribution of positive charge?
What is the formula for silicon tetrachloride?
What is the formula for silicon tetrachloride?
Which of the following is the formula for tetraphosphorus decoxide?
Which of the following is the formula for tetraphosphorus decoxide?
What is the formula for carbon disulfide?
What is the formula for carbon disulfide?
Which of the following is an oxoacid?
Which of the following is an oxoacid?
What is the name of the anion formed when all hydrogen ions are removed from nitric acid (HNO3)?
What is the name of the anion formed when all hydrogen ions are removed from nitric acid (HNO3)?
What is the name of the anion formed when all hydrogen ions are removed from phosphorous acid (H3PO3)?
What is the name of the anion formed when all hydrogen ions are removed from phosphorous acid (H3PO3)?
In Chadwick's experiment, why was it important to measure the mass of helium and hydrogen atoms?
In Chadwick's experiment, why was it important to measure the mass of helium and hydrogen atoms?
What is the relationship between the atomic number and the mass number of an isotope?
What is the relationship between the atomic number and the mass number of an isotope?
Based on Rutherford's model, if an atom has an atomic radius of 150 pm, what would be its nuclear radius?
Based on Rutherford's model, if an atom has an atomic radius of 150 pm, what would be its nuclear radius?
What statement best describes isotopes?
What statement best describes isotopes?
What characteristic makes neutrons unique compared to protons and electrons?
What characteristic makes neutrons unique compared to protons and electrons?
If an element has 20 protons and 22 neutrons, what is its mass number?
If an element has 20 protons and 22 neutrons, what is its mass number?
