Atom Model and Sturcture
What are the subatomic particles of an atom?
What are protons, neutrons, & electrons?
What is the charge of a proton?
positive
Substance made up of only one type of atom
Pure Substances
It is the visual representation of the elements
Periodic Table
What is the symbol for Hydrogen?
H
What are the building blocks of matter?
atom
Charge of an electron
Negative
True or false, gold is a pure substance
True
What did Dmitri Mendeleev usw to organize the periodic table?
atomic mass
What element has the symbol He?
Helium
Discovered the atomic nucleus through the gold foil experiment
Ernest Rutherford
Where is the proton and neutron located?
nucleus
What are substances that are formed when two or more elements combine?
Compounds
He introduced the idea of atomic weights
John Dalton
True or false, Neon is a noble gas
True
Discovered the electron and proposed “plum pudding” model
J.J. Thompson
Who discovered the electron?
J.J. Thompson
True or false, coffee is a pure substance
False
Who is the “Father of the Periodic Table”?
Dmitri Mendeleev
What does Fe and Au stand for?
Iron and Gold
Chronological order of atomic model
Democritus-Dalton-Thompson-Rutherford-Bohr
What is the mass of electron
0.00054858
Give me an example of pure substance and not a pure substance
answers vary
How does the modern periodic table help scientists?
By predicting chemical behavior
What is the first 5 elements?
Hydrogen, Helium, Lithium, Beryllium, Boron