Atomic Basics
The smallest unit of matter that still retains properties of an element.
What is an atom?
Adding an additional neutron would turn the atom into this.
What is an isotope?
Which scientist discovered the positively charged nucleus through the Gold Foil experiment?
Who is Ernest Rutherford?
I am positively charged and found in the nucleus, I have mass.
What is the proton?
Total number of electrons in a neutral atom of carbon.
What is 6 electrons?
I am the number that is made up of protons and neutrons of the element.
What is the mass number?
If Isotope A has a 20% abundance and Isotope B has 80%, which is more likely to be observed?
What is Isotope B?
I came up with "Hard Sphere" model of the atom.
Who is John Dalton?
Removing electrons would turn the atom into this.
What is a cation?
Element symbol for the element Calcium.
What is Ca?
I tell the number of protons inside inside the nucleus of an atom of a particular element.
What is the atomic number?
Determine the mass of the most abundance isotope of Cl.
What is Cl-35?
Which scientist developed the planetary model of the atom?
Who is Neils Bohr?
Adding an additional electron would turn the atom into this.
What is an anion?
Atoms with the same number of protons but different number of neutrons.
What is an isotope?
What is the term for the percentage of each isotope in a sample?
What is relative abundance?
JJ Thomson came up with the "Plum Pudding" or "Chocolate Chip Cookie" model of the atom. What does this mean?
Electrons and protons are scattered throughout the atom.
In order to change the atom into a different element we need to...
Add or remove protons.
I am the average atomic mass of all the isotopes of an element and am found on the periodic table.
What is isotopic mass? (What is average atomic mass also acceptable)
An element has two isotopes: Isotope A with a mass of 10 amu and 70% abundance, and Isotope B with a mass of 11 amu and 30% abundance. Calculate the average atomic mass.
The average atomic mass of this element is 10.3 amu.
JJ Thomson used this experiment to discover the electron.
What is the Cathode Ray Tube experiment?
Calculate the number of neutrons in an atom given that its atomic number is 26 and its mass number is 56. What is the element?
What is iron with 30 neutrons?