CHEM 163-- Semester 1 Study Guide
What does the atomic number represent?
# of protons
Create an atomic model for Magnesium
(see image)
Create an atomic model for Neon
(see image)
Create an atomic model for Oxygen
(see image)
Where are the metalloids located on the periodic table
(see image)
Where are the metals located on the periodic tables
(see image)
Where are the noble gases located on the periodic table?
(see image)
Draw the atomic diagram for Lithium. WIll the valence electrons be given or taken? What will the charge of the ion be?
(see image) Give 1+
Draw the atomic diagram for Oxygen. WIll the valence electrons be given or taken? What will the charge of the ion be?
(see image) Take 2-
Draw the atomic diagram for Chlorine. WIll the valence electrons be given or taken? What will the charge of the ion be?
(see image) Take 1-
Draw the bonding between Clorine and Fluorine. Is the bond ionic or covalent?
(see image) covalent
Draw the atomic diagram for Beryllium. WIll the valence electrons be given or taken? What will the charge of the ion be?
(see image) give 2+
Draw the bonding between Sodium and Fluorine. Is the bond ionic or covalent?
(see image) ionic
How many electrons can be on each shell?
1-2 2-8 3-8 4+- We don't care
How many electrons are in the atomic model for Sulfur
16
How many neutrons are in the atomic model for Sulfur
16
How many protons are in the atomic model for Sulfur
16
If 285.3 g of KOH reacts with an excess of FeCl3, how many grams of Fe(OH)3 will be produced? Equation: FeCl3+3KOH-->Fe(OH)3+3KCl
181.1 g
During the chemical reaction given below 22.0 g of Al and 22.0 g of HCl were allowed to react. Determine how many grams of AlCl3 were produced. Equation: 2Al(s)+6HCl(aq)--> 2AlCl3(aq)+3H2(g)
28.6 g AlCl3
Balance the following equation: KMnO4+H2SO4--> MnSO4+KSO4+H2O+O3
6KMnO4+9H2SO4--> 6MnSO4+3KSO4+9H2O+5O3
Is it matter? Love Wood Brick Computer Hope Elements Friendship
No Yes Yes Yes No Yes No
Has a change in mass occurred? Pulling apart a cotton ball
No, mass stayed the same the particles are just spread apart
Has a change in mass occurred? Melting a piece of ice
No, the particles just switched forms from solid to liquid
Where are the neutrons located in an atom?
Nucleus
Where are the protons located in an atom?
Nucleus
Physical or Chemical Property Blue color
Physical
Physical or Chemical Property Density
Physical
Physical or Chemical Property Luster
Physical
Physical or Chemical Property Odor
Physical
Physical or Chemical Property Sour taste
Physical
What does the atomic mass represent?
Protons + Neutrons
Name two elements that will have similar properties to Lithium.
Sodium Potassium
When under a flame the stick produces a red color. What compound is on the stick?
Strontium
Has a change in mass occurred? Burning a birthday candle
Yes, the particles burned from the candle leaving with a smaller mass.
Balance the following equation: NaN3--> N2+Na
2NaN3-->3N2+2Na
WHat is the molar mass of Al2(SO4)3?
342.150
What are Extensive properties?
A property dependent on amount mass or volume
Name two elements that will have similar properties to Radon.
Argon Xenon
What contributions did Ernest Rutherford make to the Atomic Theory?
Atoms have a nucleus in the center. Used Gold Foil Experiment.
How many grams of calcium hydroxide will be needed to completely react with 29.5 g of sodium phosphate? (HINT: You need to write the equation and balance it before solving)
Balanced Equation: 3Ca(OH)2+2Na3PO4--> Ca3(PO4)2+6NaOH 20 g Ca(OH)2
Based on the following equation, how many moles of each product are produced when 5.9 moles of Zn(OH)2 are reacted with H3PO4? (You need to balance the equation.) Zn(OH)2+H3PO4-->Zn3(PO4)2+H2O
Balanced Equation: 3Zn(OH)2+2H3PO4-->Zn3(PO4)2+6H2O 2.0 mol Zn3(PO4)2 12 mol H2O
The density of gold is 19.3 g/cm^3 and lead is 11.4 g/cm^3. What is true about the density of a lead block that is coated with gold? A. Its density is 11.4 g/cm^3 B. Its density is 19.3 g/cm^3 C. Its density is between 11.4 g/cm^3and 19.3 g/cm^3 D. Not enough information
C
Balance the following equation: CH4+O2-->CO2+H20
CH4+2O2-->CO2+2H20
Physical or Chemical Change Hydrochloric acid reacts with potassium hydroxide to produce a salt, water and heat.
Chemical
Physical or Chemical Change Iron rusts
Chemical
Physical or Chemical Change Milk sours
Chemical
Physical or Chemical Change Potassium Chlorate decomposes to potassium chloride and oxygen gas
Chemical
Physical or Chemical Change Wood rotting
Chemical
Physical or Chemical Property Can neutralize a base
Chemical
Physical or Chemical Property Flammability
Chemical
Physical or Chemical Property Reacts with a base to form water
Chemical
When under a flame the stick produces a green color. What compound is on the stick?
Copper
Suppose you pour nitric acid on some copper powder in a test tube. A brown gas is produced and a light blue liquid is all that reamins in the test tube. What happened to the copper atoms? A. They escaped as part of the brown gas. B. They were destroyed by the acid. C.They are now in the light blue liquid as copper atoms D. They are now in the light blue liguid as copper ions.
D
What contributions did John Dalton make to the Atomic Theory?
Different compounds made up everything on earth. Marbles
What contributions did Niels Bohr make to the Atomic Theory?
Electrons cycled through atom on rings. Different wavelengths of light. Solar system model
Write the balanced chemical equation for Solid iron(II) hydroxide decomposes to form solid iron(II) oxide and liquid water
Fe(OH)2 (s) --> FeO(s)+ H2O (l)
Iron metal combines with H2SO4 to make iron(III) sulfate and hydrogen gas.
Fe+H2SO4-->Fe(SO4)3+H2
Using a periodic table predict the charge of the following Elements: Francium Sulfur Iodine
Francium- 1+ Sulfur- 2- Iodine- 3-
What contributions did Chadwick make to the Atomic Theory?
He found Neutrons
What contributions did Goldstien make to the Atomic Theory?
He found protons
Name three non metals on the periodic table
Helium Neon Oxygen
Name three metals on the periodic table.
Iron Platinum Gold
What are Intensive properties?
Is not affected by amount color or density
Potassium hydroxide and H3PO4 react to form potassium phosphate and water.
KHO+H3PO4-->K3PO4+H2O
Where are the electrons located in an atom?
Outside of the nucleus
When grouped into pairs which elements will have similar properties? Phosphorus Helium Radium Bismuth Magnesium Radon
P & B He & Rn Ra & Mg
Using a solubility table, determine which compound is insoluble in water. A. KBr2 B. PbI2 C. ((NH4)3)PO4 D. NaOH
PbI2
Physical or Chemical Change A pellet of sodium is sliced in two pieces.
Physical
Physical or Chemical Change Evaporation
Physical
Physical or Chemical Change Ice melting
Physical
Physical or Chemical Change Sodium hydroxide dissolves in water
Physical
Physical or Chemical Change Water is heated and changed to steam
Physical
Name three metalloids on the periodic table.
Silicon Boron Germanium
Tin(IV) oxide and hydrgen make tin and water.
SnO2+H2-->Sn+H2O
When under a flame the stick produces a orange color. What compound is on the stick?
Sodium
What is a valence electron?
The electrons on the outermost shell
What contributions did JJ Thompson make to the Atomic Theory?
There are charged things inside atoms. Chocolate Chip
Describe the law of the conservation of mass.
You can't create or destroy matter.
What is matter?
a tangible item with a mass and volume
Write and balance the chemical equation that relates to each of the following word equations: a. solid zinc metal + oxygen gas → solid zinc oxide b. HCl (aq) + magnesium hydroxide (aq) → magnesium chloride (aq) + water c. HNO3 (aq) + calcium hydroxide (s) → calcium nitrate (aq) + water
a. 2Zn (s) + O2 (g) → 2 ZnO (s) b. 2HCl (aq) + Mg(OH)2 (aq) → MgCl2 (aq) + 2H2O (l) c. 2HNO3 (aq) + Ca(OH)2 (s) → Ca(NO3)2 (aq) + 2 H2O (l)
1. In the reaction: 4Li (s) + O2 (g) → 2Li2O (s) a. what is the product? b. what are the reactants? c. what does the "(s)" after the formula of lithium oxide signify? d. what is the coefficient of the lithium metal?
a. Li2O b. Li(s) O2(g) c. Phase of Matter (solid) d. 4
Here are three isotopes of an element: 12/6C 13/6C 14/6C a. The element is: __________ b. The number 6 refers to the ________ c. The numbers 12, 13, and 14 refer to the ____________ d. How many protons and neutrons are in the first isotope? e. How many protons and neutrons are in the second isotope? f. How many protons and neutrons are in the third isotope?
a. carbon b. atomic number c. mass number d. 6 protons 6 neutrons e. 6 protons 7 neutrons f. 6 protons 8 protons
C10H8 is a [covalent/ionic] compound, and will be [conductive/not conductive] when melted. If placed in water, the sample will [dissolve/not dissolve/maybe dissolve]. In general, this sample is likely to have a [high/low] melting point.
covalent, not conductive, maybe dissolve, low
C7H6O3 is a [covalent/ionic] compound, and will be [conductive/not conductive] when melted. If placed in water, the sample will [dissolve/not dissolve/maybe dissolve]. In general, this sample is likely to have a [high/low] melting point.
covalent, not conductive, maybe dissolve,low
CaBr2 is a [covalent/ionic] compound, and will be [conductive/not conductive] when melted. If placed in water, the sample will [dissolve/not dissolve/maybe dissolve]. In general, this sample is likely to have a [high/low] melting point.
ionic, conductive, dissolve high
Name the following compounds: FeSO3 Cu(NO3)2 PF5 KClO3 MgCO3
iron(II)phosphate copper(II)nitrate phosphorus pentafluoride pottassium chlorate magneseum carbonate
What is density?
mass/volume
What is mass?
the amount of particles related to the weight measured using a balance
What is volume?
the amount of space something takes up measured using water displacement or l*w*h
What contributions did Schrodinger make to the Atomic Theory?
used calculus and probability to prove electrons where in the cloud surrounding the nucleus.