History of Chemistry
Parts of an Atom
Atomic Masses
What is Matter?
other chem topics
100

The earliest form of chemistry is called?

Alchemy 

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

Who came up with the very first idea of Atoms?

Democritus/the Greeks 

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
The earliest form of chemistry was called _______.
alchemy
300
These particles are located within the nucleus, and have no charge.
Neutron
300
A proton has the atomic mass of what?
1
300

As temperature decreases what happens to matter? 

Atoms start to slow down, come closer begin to stick together, kinetic energy increases

300
What element has a number of 56?
barium
400

What experiment lead to Rutherford's discovery?

Gold foil experiment.

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

color change in a reactions is what type of change?

most likely a chemical change 

400

how many protons, neutrons, and electrons does   22083Bi+5

83=protons neutrons=137 electrons=78 

500

who discovered the wave like and cloud like location of electrons?

Schrödinger

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

An electron has a mass of what?

1/1836 but we consider it weightless

500

What phase of matter do atoms start to move fast and spread far apart?

gas

500

Some atoms have more ___________, which makes it an isotope and gives it a different mass.

neutrons 

M
e
n
u