Atomic Theory Scientists
This scientist discovered the neutron in the atom.
Who is James Chadwick?
A proposed solution or educated guess formed to solve a problem.
What is a hypothesis?
The study of what substances are made of and how they change and combine.
What is chemistry?
How do you know if an object will sink or float?
What is compare the density to the density of water?
The number of protons in one atom of that element and also equals the number of electrons.
What is the atomic #?
This scientist published the first fully scientific model of the atom.
Who is John Dalton?
In an experiment, this is the one factor being tested.
What is the variable?
Listening to instructions, pulling long hair back, and keeping your workspace clean are a few examples.
What are safety guidelines for a lab?
These three basic things the universe is what the universe is made of.
What is matter, energy, & intelligence?
This Greek philosopher was the first to imagine that matter was made of atoms.
Who is Democritus?
This is the first step of the scientific method.
What is stating the problem?
The study of energy forms and laws of motion.
What is Physics?
The center of an atom holding the protons and neutrons.
What is the nucleus?
This scientist discovered a tiny nucleus containing the positive charge and almost all the mass and negative electrons surrounding the nucleus. Most of the atom was empty space.
Who is Ernest Rutherford?
A mathematical statement that tells how something happens after tons of experimental research like E = mc2.
What is scientific law?
An explanation based on many observations supported by experimental results.
What is scientific theory?
An example of atoms with a net negative charge like nitrite (NO2-).
What is an ion?
This scientist believed electrons orbit the nucleus like planets and the energy of the electron determines its orbit and only fixed energies are possible.
Who is Neils Bohr?
In an experiment, this the one factor that is constant.
What is the control?
Pointing a heated test tube at the lab partner, not wearing goggles when fire is present, and eating during an experiment are examples in the lab.
What is unsafe lab practices?
You can calculate this if you know the mass and the volume of an object.
What is density?
The beautiful colors in the sunrise and sunsets each day.
What are examples of God's intelligence?