History of Chemistry
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
The inner part of an atom that contains the proton and the neutron is called the __________.
Nucleus
If an atom was enlarged so the electrons were spinning around the stands of a football stadium, how big would the nucleus be?
a) football
b) marble
c) pea
marble
This is anything that takes up space (has a mass).
matter
Atomic numbers of an atom are the same as the number of what in an atom?
protons
People thought you could turn iron and lead into what?
gold
These particles have a positive charge and are found inside the nucleus.
proton
Atomic masses are measured in what?
AMU
The smallest pieces of matter are called __________.
atoms
Carbon's atomic number is _______.
6
The earliest form of chemistry was called _______.
alchemy
These particles are located within the nucleus, and have no charge.
Neutron
A proton has the atomic mass of what?
1
What type of particle holds the protons and neutrons together in the nucleus?
a) mesons
b) pesons
c) tesons
mesons
What element has a number of 56?
barium
Names for elements comes from the English or __________ name.
latin
These particles are negatively charge and are found outside the nucleus.
electrons
A neutron has the atomic mass of what?
1
Up, Down, Strange, Charm, top and bottom are all names for what type of particle?
a) electron
b) quark
C) neutron
quarks
Why does hydrogen have an atomic number of 1?
because it only has one proton
People first realized that an atom had a proton and an electron in which decade?
10's
Most of the mass of an atom is located here.
nucleus
An electron has a mass of what?
1/1836, or almost nothing!
What type of particle are quarks held together by?
a) gluons
b) gluoffs
c) glutons
gluons
Some atoms have different numbers of ___________, which make them an isotope
neutrons