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18 Cards in this Set
- Front
- Back
- 3rd side (hint)
Atom
|
The atom is the smallest unit that defines the chemical elements.
|
Atom makes up everything
hydrogen |
|
Atomic mass
|
the mass of an atom of a chemical element expressed in atomic mass units
|
Atomic mass is on the bottom of each symbol
4.00 |
|
Atomic mass unit |
Unit to show atomic mass |
Atomic mass is shown as AMU
107 amu |
|
Atomic number |
Number of protons in an element |
Atomic number is shown at the top
2 |
|
Atomic symbol |
A shorter version of an elements name |
What is the atomic symbol for hydrogen?
He |
|
Electron |
Subatomic partials with negative charges |
There is 1 electron in hydrogen.
e-1 |
|
Chemical symbol |
Same as atomic symbol |
The chemical symbol of oxygen is O.
Li |
|
Groups |
Elements that are grouped in the periodic table by columns, there are 18. |
What elements are in group 2?
Group 3 |
|
Isotopes |
Two or more different forms of an element |
Carbon has 3 isotopes
14C, 13C, 12C |
|
Mass number |
Some of protons and neutrons |
The mass number is above the atomic number
4he 2 |
|
Metal |
A solid material that is a good conductor heat and electricity |
I have metal on my battery.
aluminum |
|
Metalloid |
Elements that are between metals and solid non metals |
Metalloids are electrical semi conductors
silicon |
|
Neutron |
Neutrons are protons plus electrons. |
Neutrons are found in the nucleus.
Hydrogen has 3 neutrons |
|
Non metal |
An element that does not have metal properties. |
A non metal is on the right of the periodic table
oxygen |
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Nucleus
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The middle of an atom, protons and neutrons in it
|
Nucleus contains the protons and electrons
all atoms have a nucleus |
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Period |
Horizontal rows to distinguish different sections on the periodic table |
1 |
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Proton |
In the neutron, positive charge |
There are 3 protons in hydrogen
p3 |
|
Subatomic particles |
Smaller than atom |
Sub atomic particles are small.
1/1837 |
