Over-Reacting
What do bubbles or the production of a gas typically indicate?
What is a chemical reaction?
This subatomic particle has a mass of 1/1840 amu.
What is an electron?
This tells the total number or protons in an element, and the number of electrons when the atom is neutral.
What is the Atomic Number?
What is light?
This type of change occurs when ice melts into liquid water.
What is physical change or phase change?
This particle does not affect the properties of the atom except for its mass.
What is a neutron?
This tells the total number of protons plus neutrons in an isotope of an element.
What is the Mass Number?
This type of error occurs when you view the measuring instrument from different angles, resulting in an inaccurate reading.
What is Parallax error?
This scientist accidentally discovered the nucleus in 1911, using a beam of positively charged particles aimed at a piece of gold foil.
Who is Rutherford?
Iron rusts in the presence of oxygen in the air, which indicates this type of change has occurred.
What is a chemical change?
This subatomic particle determines the atomic number of an atom, as well as what element it is.
What is a proton?
This is a weighted average of the mass of all isotopes of an element.
What is the Average Atomic Mass?
This category of errors affects the precision of the measurement.
What are Random Errors?
This British Quaker developed the theory that all things are made up of indivisible, spherical atoms based on his research on elemental ratios in compounds.
Who is John Dalton?
This type of chemical reaction is indicated by a release of energy in the form of light and heat, producing CO2 and H2O gasses.
What is a combustion reaction?
These are atoms of the same element that have different masses
What are isotopes?
Unstable isotopes will undergo this process to lose mass in order to become stable.
What is radioactive decay?
This type of error is caused by carelessness or human clumsiness, typically an accident.
What is a Blunder?
This atomic model showed electrons orbiting around the nucleus in clear, defined circles, like the Earth does around the Sun.
What is the Planetary Model?
This type of reaction is indicated when two clear liquids are combined, resulting in a precipitate forming.
What is a double replacement reaction?
If an atom completely fills up two electron energy levels, how many electrons does it have?
10 electrons
This term represents the amount of a specific isotope relative to the most plentiful isotope.
What is Relative Abundance?
This type of error results from when the experimental procedure itself is flawed, resulting in inaccuracies in the experiment.
What is Theoretical Error?
Schrödinger & Heisenberg developed this atomic model, which depicts the probability where an electron can be found.
What is the electron cloud model?