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

The earliest form of chemistry was called _______.

alchemy

100
The inner part of an atom that contains the proton and the neutron is called the __________.
Nucleus
100

Cobalt has an atomic mass of what?

58.9332

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

Which element has an atomic mass of 238.029

Uranium

200
The smallest pieces of matter are called __________.
atoms
200
Carbon's atomic number is _______.
6
300

Early people were producing these types of changes even though they didn't know what was happening. For example - extracting metals from ores and making jewelry.

chemical

300
These particles are located within the nucleus, and have no charge.
Neutron
300

The mass number is determined from the atomic mass by?

Rounding

300

Matter cannot be created or_______?

destroyed

300
What element has a number of 56?
barium
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

If an atom was enlarged so the electrons were spinning around the stands of a football stadium, how big would the nucleus be?

Marble

400

Two properties of matter are?

Physical and Chemical
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

Atomic masses are measured in what?

AMU

500

What are the three phases of matter

Solids, Liquids, and Gases

500

Some atoms have more ___________, which makes it an ion and gives it a negative charge

electrons

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