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History of Chemistry
Parts of an Atom
Atomic Masses
What is Matter?
Atomic Numbers
100

What did democritus discover in terms of the atomic model?

Atoms are tiny invisible and unbreakable particles that make up everything we see large scale.

100
The inner part of an atom that contains the proton and the neutron is called the __________.
Nucleus
100
If an atom was enlarged so the electrons were spinning around the stands of a football stadium, how big would the nucleus be?
marble
100
This is anything that takes up space (has a mass).
matter
100
Atomic numbers of an atom are the same as the number of what in an atom?
protons
200

What did JJ Thompson discover in terms of the atomic model?

Atoms are spheres with a positive and negative charge randomly scattered within it.
200
These particles have a positive charge and are found inside the nucleus.
proton
200
Atomic masses are measured in what?
AMU
200
The smallest pieces of matter are called __________.
atoms
200
Carbon's atomic number is _______.
6
300

What did Rutherford discover in terms of the atomic model?

That negatively charged electrons travel in an orbit around a nucleus.

300
These particles are located within the nucleus, and have no charge.
Neutron
300
A proton has the atomic mass of what?
1
300

What are the three states of matter?

SOLID LIQUID & GAS

300
What element has a number of 56?
barium
400

What did Niels Bohr discover in terms of the atomic model? 

The fixed orbits of electrons moving from one energy level to another.

400
These particles are negatively charge and are found outside the nucleus.
electrons
400
A neutron has the atomic mass of what?
1
400

What kind of change occurs when you break intramolecular bonds? chemical change or physical change.

physical change (phase change)

400
Why does hydrogen have an atomic number of 1?
because it only has one proton
500

What is the latin word for "invisible" and/or "Smallest particle"

ATOMOS

500
Most of the mass of an atom is located here.
nucleus
500

An electron has a mass of what?

BASICALLY NOTHING! 

1/1836 AMU

500

The forces that determine the state of matter? ( forces between MOLECULES )

intramolecular forces

500
Some atoms have more ___________, which makes it an isotope and gives it a negative charge
electrons