Science study flashcards 2
(24 cards)
What are atoms
all matter is made up of atoms and atoms are the smallest particles that make up a substance
What are subatomic particles
neutrons, protons, electrons, and they all have a specific charge
Where are protons and neutrons found
found in the nucleus
Where are the electrons found
outside the nucleus in an orbit
Is the number of protons and neutrons in a neutral atom the same
yes
Symbol for neutron
N
Symbol for proton
+
Symbol for electron
e-
Where do protons and neutrons occur
occurs in the nucleus called the nucleon
What is the volume of an atom determined by
number of electrons
Mass of atom is determined by
number of nucleons
Are the atoms of a certain element identical
yes
What do atoms form different elements differ by
mass, size, and other properties
What is the nuclide notation
mass number at the top and atomic number at the bottom and x represent the element symbol
What is the atomic number
number of protons inside the nucleus
What is the mass number
number of protons + number of neutrons
What is the equation to get nuetrons
mass number - atomic number
What is the eqaution to get electrons
= number of protons
The atomic number will always be …
smaller
The mass number will always be on the…
top
What happens when you go down a period
orbit gets bigger and therefore atom is bigger
The number of protons and electrons will always be …
the same
Atom will always be…
neutral with no charge
What do pure atoms always have
same number of protons and electrons
