Post on 01-Jan-2016
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Ch 1, 2, & 3
Ch 4 & 5
Ch 6 & 7
Ch 8 & 9
Ch 10, 11, & 12
Ch 13, 15, & 18
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Give 3 examples of heterogeneous mixtures and 3 homogeneous
mixtures.
Heterogeneous- granite, oil/water, choc milkHomogeneous- hot tea, alloys, plastic
How many sig figs?a. 3004b. 0.034c. 430.0d. 430
a. 3004- 4b. 0.034- 2c. 430.0- 4d. 430- 2
Point to and name 5 families on the periodic table.
Alkali, alkaline-earth, transitions, halogens, and noble gases
Write the electron configurations for
magnesium and iron.
1s22s22p63s2
1s22s22p63s23p64s23d6
Define chemical property.Give 1 example of a chemical property and 3 examples of physical properties.
A property that can be observed only when there is a chemical reaction, flammability.Physical-color, odor, volume, shape, texture.
On the board, list 3 properties of metals and 3 of nonmetals
metals-shiny, conductive, solid, malleable, ductile
Describe the forces of attraction in an
ionic bond.
composed of cations attracted to anions
Write the name for
TiSO4
Titanium(II) sulfate
Write the formula formolybdenum(VI)
sulfide
MoS3
In the following ionic compounds, pick elements that
could represent X and Y:a) XYb) XY3
c) X2Y
a) XY-NaCl, MgO, AlNb) XY3- AlCl3
c) X2Y- Li2O
Describe characteristicsof an ionic compound.
Strong bonds, crystal lattice, conductive
only when liquid or in solution, neutral, solid
at room temp.
How many atoms are in 4.45 moles of
beryllium?
2.68 x 1024atoms Be
True/False:1 mol B=10.81atoms B
False1mol B = 6.022 x 1023
atoms or1mol B= 10.81 g B
Describe the magnitude of the electronegativity differences in ionic and nonpolar covalent bonds.
Ionic- high EN differenceNonpolar Cov- low EN difference
Draw and give the polarity of the following:a) AlF3 b) CH2Cl2
Nonpolar and polar
The atom is made of a very dense ______ and a very spacious
______ ____.
The atom is made of a very dense nucleus and a very spacious electron cloud.
What is theoretical yield?
The maximum amt of product that can be formed. You can
calculate it on paper.
Balance the following equation:
___C3H8(g) + O2(g) → ___CO2(g) + ___H2O(g)
___C3H8(g) + 5 O2(g) → __3_CO2(g) + _4_H2O(g)
How many proton, neutrons, and
electrons does the Ni+2 ion have? It’s mass number is 58.
28 p+
30 n26 e-
C3H8(g) + 5O2(g) → 3CO2(g) + 4H2O(g)How many moles of
oxygen must react with 6.43moles of propane?
6.43mol C3H8 x 5mol O2 = 32.2mol O2
1molC3H8
Define temperature and heat.
Temp. is the average amt of kinetic energy in a sample.
Heat is the total kinetic energy.
Name the 3 types of intermolecular forces.
1. Hydrogen bonding2. Dipole-dipole forces3. London dispersion forces
Explain the three types of intermolecular force1. Hydrogen bonding2. Dipole-dipole forces3. London dispersion forces
1.A hydrogen attracted to a highly EN atom in another molecule.2. Two polar molecules attracted to one another.3. Two nonpolar molecules that have a random shift in electrons which creates a short lived dipole.
A balloon is filled with 5.00 L of helium at a temperature of 308 K.
What will be the volume of the balloon when it is brought into an air-conditioned house at 295 K?
4.79L
A container holds .70 mol of oxygen gas at 25.0°C. If the pressure is 870kPa what is the volume of the container?
2.0L
How much KNO3 can be added into solution if you heat it from 20°C to 90°C?
207g-33g= ~174g
Acid/baseLabel the BA, BB, CA, CB. PO4
-3 + HSO4- ↔ HPO4
-2 + SO4-2
BB BA CA CBPO4
-3 + HSO4- ↔ HPO4
-2 + SO4-2
Write 5 particles and their symbols that may be emitted or absorbed in a nuclear reaction.
Alpha, beta, electron, positron, neutron
Define unsaturated, saturated, and supersaturated
solutions.
Unsat-a solution that contains less solute
than it should be able to hold at a specific
temp…
What is radioactivity?
When a nucleus is unstable it breaks
apart and may release particles and/or
gamma rays.
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