Atom
the smallest unit of an element that still has the properties of that element
What is an Atom?
What is the charge of a proton?
what is Positive?
What is the electromagnetic force?
+ and - charges
What information does the atomic number provide?
Number of Proton?
Define isotopes.
same number of proton different number os neutrons
Name the two main parts of an atom
What are Nucleus and electron cloud?
Where are neutrons located in an atom?
What is the Nucleus?
How do valence electrons affect an atom's bonding behavior?
if an atom will lose or gain electrons
How can you determine the mass number of an atom?
Proton + neutrons
What notation is used to represent isotopes?
hypen notation or Nuclear notation
force that holds the nucleus of an atom together
What is strong Nuclear force?
What particle is located outside the nucleus and has a negative charge?
What is the electron?
What happens to the electron cloud when like charges repel each other?
what is gets bigger?
What does the periodic table tell you about an element's atomic mass?
Mass on the periodic table contain masses all of naturally occurring isotopes
How do isotopes of the same element differ?
number of Neutrons
the difference between a pure substance and a mixture
what is mixture can be separated physically?
How do you find the mass of an atom?
What is proton + neutrons?
Describe the structure of the electron cloud
region where the electrons might be located
What is the average atomic mass, and how is it calculated?
isotopes mass x percent abundance
Why are isotopes important in scientific research?
not all atoms of an element are the same
How do you determine the number of protons, neutrons, and electrons in an atom?
Proton= atomic number
electron = number of Proton
Neutrons = mass - proton
Explain the relationship between protons and neutrons in isotopes.
what is Protons are always the same but Neutrons differs?
What is the significance of the outermost energy level in an atom?
determines the bonding behavior
Explain how to write the nuclear notation for an isotope.
The symbol and the mass number in the upper left corner