CHEM 1B
HAHS
MS.KNICK
CHEMISTRY 1B MIDTERM STUDY GUIDE
Name: ______________________________________________________________________________
STOICHIOMETRY:
1.
What is a limiting reactant? ____________________________________________________________
2.
What is an excess reactant ____________________________________________________________
3.
Zinc and sulfur react to form zinc sulfide according to the equation.
____Zn + ____S  _____ZnS
If 25.0 g of zinc and 30.0 g of sulfur are mixed,
a.
Which chemical is the limiting reactant?
b.
How many grams of ZnS will be formed?
c.
How many grams of the excess reactant will remain after the reaction is over?
GAS LAWS:
1.
The 4 measurable properties of gases. ____________, _____________, _____________,
____________.
2.
The units for volume are ___________. The units for temperature are ___________. The units for pressure
are ____________.
3.
What does STP mean? What is the value of temperature? What is the value of pressure?
4.
Know the relationship between pressure and volume: As the pressure increases, volume_____________.
a.
A weather balloon with a volume of 1.375 L is released from the Earth’s surface at sea level( 100kPa.)
What volume will the balloon occupy at an altitude where the pressure is 10kPa (1kPa = 1000Pa)? 14 L
5.
Know the relationship between temperature and volume. As the temperature increases, volume
__________.
a.
A balloon filled with oxygen gas occupies a volume of 5.5 L at 25C. What will the volume be at 100C
(1000mL = 1L)? 6.9L
6.
Know the relationship between temperature and pressure (direct or indirect). As the temperature increases,
temperature __________________.
CHEM 1B
a.
HAHS
MS.KNICK
Sample of hydrogen at 47C exerts a pressure of 0.329 atm. The gas is heated to 77C at constant volume.
What will its new pressure be? 0.360 atm
7.
Be able to write the mathematic expression…what is the formula?
a.
2.00 L of a gas is collected at 25.0°C and 745.0 mmHg. What is the volume at STP? 1.8L
8.
Given a set of data, be able to solve for an unknown using the ideal gas law.
a.
How many liters are occupied by a 0.909 mol of nitrogen at 125C and 0.901 atm? 33.0L
ELECTRONS IN THE ATOM:
1.
What is a frequency?
2.
What is wavelength?
3.
The units for wavelength are ____________; the units for frequency are ___________ or
_________________; and the units for energy are ________________.
4.
Determine the frequency of a photon of green light whose wavelength is 1.2 x 10-8 m.
5.
Determine the wavelength of a photon whose energy is 8.9 x 10-38J.
6.
Write the full electron configuration, the noble gas configuration, and the orbital electron diagram for the
following elements:
a.
b.
S
Al
PERIODIC TRENDS:
1.
What is atomic radius?
2.
What is electronegativity?
3.
What is ionization energy?
4.
Which atom is larger: Ca, Ne, Mg
5.
Which atom has a higher electronegativity? P,N,Si
6.
Which atom has the smallest ionization energy? Al, K, Cu
CHEM 1B
HAHS
MS.KNICK
CHAPTER 15:
1.
An ionic bond is formed between a(n) ______________ and a(n) ____________________.
2.
Electrons in the outer most shell are known as _______________________.
3.
Atoms bond in order to obtain ______ electrons. This is known as a(n) _________________.
4.
Metals form a ________ (positive/negative) charge. This is known as a(n) ______________.
5.
Nonmetals form a _________ (positive/negative) charge. This is known as a(n) ______________.
6.
Write the electron configuration for the following atoms. Place a box around the valence electrons.
Ge: _____________________________________________________________________
Si: ____________________________________________________________________
K: _____________________________________________________________________
7. Show ionic bond formation between the atoms below:
Na and Cl
Mg and F
Ca and P
Be and I
CHEM 1B
HAHS
MS.KNICK