Atom
Must have mass and volume (takes up space).
What is matter?
Where are electrons found?
Electron cloud
How do you calculate the number of protons, neutrons, and electrons in a neutral atom?
P=atomic number
N=Mass #-Atomic #
E=Same as protons
What is an isotope?
What is an ion?
positive or negatively charged atom due to the gain or loss of electrons
What is an atom?
basic building block of life
What is the center of the atom called? What two subatomic particles are found there?
Nucleus-protons and neutrons
An atom has a atomic number of 18 and a mass number of 40. What element is it? How many protons, neutrons, and electrons.
Argon (p=18, n=22, e=18)
Compare and contrast isotopes.
Same: protons, properties, atomic number
Different: mass number, neutron number
What is a cation?
Positive ion (lost an electron, so has more protons)
What is the atomic number?
Number of protons
List the charge, location, and size of each subatomic particle
Proton (+ charge, nucleus, 1 amu)
Neutron (no charge, nucleus, 1 amu)
Electron (- charge, electron cloud, tiny)
What is zinc's atomic number? What does this tell you?
30 protons
Calculate the protons, neutrons, and electrons for neutral Carbon-12 and Carbon-13.
Carbon-12 (p=6, n=6, e=6)
Carbon-13 (p=6, n=7, e=6)
What is an anion?
Negative ion (gained electrons, so has more electrons)
What is the mass number?
Draw a Bohr model for Boron with a mass number of 11.
P=5, N=6, E=5
Iron has 26 protons and 30 neutrons. What is its mass number?
Mass number: 56
Calculate the protons, neutrons, and electrons for Strontium-87 and Strontium-88.
Strontium-87 (p=38, n=49, e=38)
Strontium-88 (p=38, n=50, e=38)
An atom has 19 protons and 18 electrons. What is its charge? What element is it? Is it a cation or anion?
Charge: +1
Element: Potassium (K)
Cation
What determines which element an atom is?
Protons/Atomic #
How many electrons can be found in the first energy level? How many electrons can be found in the second energy level?
1st energy level-2 electrons
2nd energy level-8 electrons
Rhenium has an atomic number of 75 and a mass number of 186. How many protons, neutrons, and electrons does it have?
P=75
N=111
E=75
Create an isotope for the following atom: Zirconium with a mass number of 91. How many protons, neutrons, and electrons would they each have.
Zirconium-91 (p=40, n=51, e=40)
Zirconium-92 (p=40, n=52, e=40)
An atom has 7 protons and 10 electrons. What is its charge? What element is it? Is it a cation or anion?
Charge: -3
Element: Nitrogen
Anion