History of the Atom
The simplest form of matter, composed of a single part or unit.
What is atom.
What is the name of the most current model of the atom?
Electron Cloud Model or Quantum Mechanical Model
What is the definition of density?
The amount of mass per unit of volume.
Name the scientist who first coined with the word "atom"
Democritis
Orange juice without pulp is considered to be this.
A homogenous mixture.
Which scientist discovered the electron?
JJ Thomson
What are two units used to measure density?
g/mL and g/cm^3
Name three different physical properties.
Density, color, melting point, boiling point, state of matter, conductivity, etc.
Which scientist discovered the nucleus and proton?
Ernest Rutherford
Give an example of something that is NOT matter.
Energy, thoughts, ideas, emotions, etc
Name 2 different types of chemical properties.
Flammability, reactivity, combustion, toxicity, acidity, etc.
A mixture of different metals to form a stronger metal.
An alloy
How is the Bohr Model different from the most current model of the atom?
The Bohr Model has distinct energy levels where electrons travel. The Electron Cloud Model has energy levels based on the probability of an electron found there.
What is the difference between mass and weight?
Mass is the amount of matter in an object.
Weight is the force of gravity acting on mass.
Name the scientist who came up with the idea of the Periodic Table.
Give an example of a physical and chemical change.
Answers may vary.