Atom
What are the two basic parts of an atom?
nucleus and electron cloud
How is the periodic table arranged.
increasing atomic number and atomic mass and characteristics
What is the difference between a Lewis model and a Bohr model?
What is the chemical formula for water and what type of bonding does it use?
H2O
Covalent bonding
What are the two types of bonds that we learned about?
Covalent and Ionic
Name the three subatomic particles and their charges
proton- +
Neutron: 0
ELectron: -
How do you determine valence electrons?
group number
How do you determine valence electrons?
Group number
What are the 5 properties of water that we discussed?
cohesion
adhesion
high specific heat
universal solvent
less dense as a solid
What is an isotope? Name one type.
Same element different amount of neutrons.
Carbon-12
Carbon-13
Carbon-14
What do you find in the nucleus?
protons and neutrons
Why is helium with the noble gases and in group 18 but is only has 2 electrons?
Because it acts more like a noble gas
Why is the Lewis Dot Diagram so important?
It helps us to determine bonding
Why is water called a polar molecule? Explain.
Covalent bonding
Oxygen pulls the electrons closer to it making it slightly negative and leaving the Hydrogen slightly positive.
What was the atom bomb made of that was dropped on Japan in WW2.
Uranium
(Plutonium)
The number of neutrons?
atomic number
atomic mass- atomic number
Name one of the noble gases
Xenon, argon, radon, neon
Draw a Lewis Dot diagram for Magnesium
atomic number 12
atomic mass 24.305
group number 2
Will draw on board
Explain how water can have cohesion and surface tension?
Hydrogen bonds
Draw picture
A non-metal and a non-metal bond how?
A metal and a non-metal bond how?
Covalent
Ionic
Who was one of the key scientists that helped to shape the Atomic Theory?
Niels Bohr
What elements are in group 2.
Alkaline earth metals
Draw a Bohr model for Neon
Atomic number 10
Atomic mass 20.180
Group number 18
Will draw on the board
How does high specific heat help the earth?
Oceans, streams, lakes, rivers absorb extra heat energy from the sun and help to cool the earth.
Draw a covalent bond and an ionic bond and explain the difference between the types of bonding.
Will draw on the board