Unit 0
Determine the number of significant figures in
125,904.000
What is 9?
What are the correct charges of protons, neutrons, and electrons?
What is positive, neutral, and negative?
In what family are the most active metals located?
Alkali Metals
What kind of compound is formed when carbon reacts with hydrogen?
Covalent
What is the oxidation number for Zinc?
2+
Round the following number to three significant figures
17.591
What is 17.6?
Where are electrons located? Where are protons and neutrons located?
What is the electron cloud and nucleus?
Classify the following elements as either metal, non-metal, or metalliod.
Argon, Sulfur, Calcium, and Boron.
What is Nonmetal, Nonmetal, Metal, and Metalloid.
Ions are formed when metals ___ and nonmetals ___ electrons? (Hint: gain or lose)
lose, gain
How many protons are in Oxygen and Sodium?
What is 8 and 11?
Use scientific notation to express the number 587,200,000 to two significant figures.
What is 590,000,000?
The lowest allowable state of an atom is called ___?
What is ground state?
What are the oxidation numbers of
Nitrogen, Oxygen, Sodium, and Boron?
What is 3-, 2-, 1+, and 3+?
What is the model for metallic bonding called?
What is "electron sea"/ "Sea of electrons"
What is the chemical formula for ammonium?
NH4+
Define precision and accuracy.
Precision: a group of results clustered together
Accuracy:close to the correct/absolute value
Draw alpha, beta, and gamma particles.
see answer on white board.
Place the following elements in order of increasing electronegativity
Sulfur, Oxygen, and Aluminum.
What is Aluminum, Sulfur, and Oxygen?
What is the formula for the following Ionic bond
Aluminum Nitrate
Al(NO3)3
What is the name of HCl
Hydrochloric acid
Solve the problem and answer with the correct significant figures.
3.01 x 0.06
What is 0.23
Write a balanced equation for Uranium-238 when it emits an alpha particle.
What is Thorium-234?
Indicate whether the following properties increase or decrease from left to right across the periodic table
Atomic Radius, Ionization Energy, and Electronegativity.
Atomic Radius: Increases from left to right
Ionization Energy and Electronegativity: Increase from right to left.
Draw a complete lewis structure for NO3- (that negative is for the oxidation number)
See board
Name the rules of type 1 Ionic
Group 1 and 2
Zn, Cd, Al, Ag, and ammonium