The Atom - Basics Flashcards
Explain the structure of the atom ?
+In the nucleus - Proton and Neutron -held together by strong nuclear forces.where most of the mass is
+Orbiting in shells - Electrons -electrostatic forces .most of volume
diameter of an atom is teeny weanie
What is the Relative Mass of a Proton ?
1
What is the Relative Mass of a Neutron?
0
what is the relative mass of an electron ?
1/1840
what is the relative charge of a proton ?
+1
what is the relative charge of a neutron ?
0
what is the relative charge of a electron ?
-1
how do you find the number of protons in an atom ?
the atomic number
How do you find the number of electrons in an atom ?
atomic numnber
how do you find the number of neutrons in an atom ?
mass number -atomic number
what does the proton number do ?
identifies the element
What is a ion ?
a charged atom
how are ions created ?
gaining or losing electrons
what is diffrent in ions from normal atoms ?
the electron number
do negative ions has more or less electrons?
more
do postitive ions have more or less electrons ?
less
how do you find the charge of an atom ?
protons-electrons
what is an isotope ?
atoms with the same number of protons but different numbers of neutrons
what does the number of electrons decide?
the chemical properties of an element
do isotopes have the same chemical properties as each other ? give your reasoning
yes as they have the same electron configuration as one another
what do the physical properties of an element depend on ?
the mass of the element
why do isotopes sometimes have different physical properties ?
they may have different masses
