Terms in this set (36)
What is the atomic symbol for Gold?
the smallest particle into which an element can be divided and still be the same substance
the number of protons in the nucleus which gives the identity of the element
negatively charged particle that orbits the nucleus of an atom
the particle with neutral located in the nucleus
The center core of an atom that contains the protons and neutrons
positively charged particle located in the nucleus of an atom
proton, neutron, electron
What are the 3 subatomic particles in an atom?
Identify the element from the following information:
What is the charge of the nucleus?
by the protons
How do scientists identify an atom?
protons and neutrons
What gives an atom its mass?
protons and electrons
A balanced (neutral charged) atom has equal numbers of ____ and _____
add protons and neutrons
How do you calculate Mass number?
Which part of the atom is the most dense?
Where are electrons found?
Part of atom with most of the mass
Schrodinger and Heisenberg
studied energy of electrons and helped develop electron cloud model
How many neutrons does Carbon have
An atom that have extra neutrons
Atoms which gain or lose electrons are called
What is the atomic mass for Chlorine?
How many protons does Argon have?
How many electrons does Calcium have?
What is the atomic mass for Iron?
Atomic mass 28
Electrons in last energy level
2 nd energy level
Can hold 8 electrons
Formula for energy level
All elements want how many valance electrons (octet rule)
How many valance electrons does sodium have
How many valance electrons does Nitrogen have
What is the charge of an atom that gains an electron.
Number of neutrons in atom
Rounded atomic mass - protons
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