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

This person created the Periodic Table.

Dimitri Mendeleev

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
People thought you could turn iron and lead into what?
gold
200
These particles have a positive charge and are found inside the nucleus.
proton
200

The density of a nucleus is the roughly the same as all of the _______ in the world, compressed into a 1x1x1 foot box.

Cars

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

What is the relationship between the mass of an object and it's volume?

Density.

300

What makes one element different from another?

The number of Protons, Neutrons, and Electrons

Or

Their Properties

400
Names for elements comes from the English or __________ name.
latin
400
These particles are negatively charge and are found outside the nucleus.
electrons
400
A neutron has the atomic mass of what?
1
400

When matter is gains energy what happens to its molecules?

They move faster.

400
Why does hydrogen have an atomic number of 1?
because it only has one proton
500
People first realized that an atom had a proton and an electron in which decade?
10's
500
Most of the mass of an atom is located here.
nucleus
500

About how small is an Atom

1.0 x10-11 m wide

500

NO2 (Nitrous Oxide) is commonly referred to as _________. 

Laughing Gas

500

What is the least massive Element in the Universe? 

(That we know of)

Hydrogen 

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