Atomic Vocabulary
This tiny particle is the smallest unit of an element.
What is an atom?
I am the smallest element on the periodic table with only one proton.
What is hydrogen?
This model is the most accurate atomic model that we have today.
What is the electron cloud model?
This is the atomic mass of a Carbon-12 isotope, with the correct unit.
What is 12 amu?
This is the first step of the scientific method.
What is observation?
Anything that has mass and takes up space is considered this.
What is matter?
My chemical symbol is related to the word "plumber". Oh - and I have 82 protons in my nucleus!
What is lead?
This scientist thought that atoms looked like solid spheres and did not know about protons, neutrons, or electrons.
Who is John Dalton?
This subatomic particle determines the identity of an isotope.
What is a neutron?
This system of units includes grams and meters.
What is the metric system?
This subatomic particle is found in the nucleus and has a positive charge.
What is a proton?
I am located in Group 17 and Period 2 on the Periodic Table.
What is fluorine?
This scientist discovered that there are negatively charged particles in an atom. His model is also called the "Plum Pudding" Model.
Who is J.J. Thomson?
This is the term for the average atomic mass of all naturally occurring isotopes of an element.
What is atomic weight?
This kind of graph is used to show changes over time.
What is a line graph?
This particle is found in a cloud around the nucleus of an atom and has a negative charge.
What is an electron?
I am the element with the most protons found in Period 6.
What is radon?
This scientist's model of the atom depicted electrons moving in orbits around the nucleus.
Who is Niels Bohr?
This is the number of neutrons found in a Phosphorus-32 isotope.
What is 17?
This is the name for the set of observations in an experiment that does not receive the treatment.
What is a control group?
This subatomic particle has no charge.
What is a neutron?
Oak Ridge National Laboratory predictably has a webpage for me, number 117 on the periodic table.
This scientist performed an experiment with gold foil and protons. He discovered that atoms are mostly empty space and that there is a positively charged nucleus in the center.
Who is Ernest Rutherford?
Three atoms of a new element have been discovered. Their atomic masses are 500 amu, 497 amu, and 501 amu. This is the atomic weight of this new element with the correct units.
What is 499.33 amu?
This is a term for the outcome being measured in an experiment.
What is the dependent variable?