What is an atom?
The smallest unit of an element
Is an atom the smallest unit in chemistry?
No
What are nucleons? Name the examples.
Particles inside a nucleus such as protons and neutrons
What are electrons?
Particles in an atom outside the nucleus with a negative charge.
What is the atomic number of an atom?
The number of protons in the nucleus of an atom, this is also the number atoms are defined by and arranged by on the periodic table.
What is the combined weight of of an atom's protons and neutrons called?
The mass number
What are isotopes?
Atoms with the same number of protons (atomic number) but different numbers of neutrons
What is a nuclide?
The nucleus of a specific isotope
What is the molecular formula of Oxygen?
O2
What is the elementary symbol of Oxygen?
O (this is also how it appears on the periodic table)
On the periodic table which number is in the top corner of an element: the mass number/nuclide symbol or the atomic number/number of protons?
The mass number/nuclide symbol
What are the three isotopes of Carbon? Which is particularly useful to archeologists?
C-12, C-13, C-14
C-14 is useful to archeologists
What is the half-life of C-14?
~5000 years