Chemistry 2nd semester exam review 2017
Nuclear chemistry
What does the 4 in
What does the 101 in
represent?
represent?
Balance the following equation:
____
Balance the following equation:
____ +
During radioactive decay, the nucleus disintegrates into________________________?
Which processes always decreases the number of protons by an even number?
Properties of Alpha, Beta and Gamma particles for matching
Differentiate between Fusion and fission
All radioactive nuclides undergo _________.
Which process produces nuclei of lower mass than the reactants?
Understand how nuclear reactors work
If the particle that starts a nuclear reaction is also one of the products, the process is a_______________.
Thermochemistry
If a piece of aluminum is heated from 30.0 C to 50.0 C, what is the value of ?
Find the specific heat of a material if a 6.0 g sample absorbs 50. J when it is heated from 30ºC to 50ºC.
Recognize endothermic and exothermic reactions in all the ways we have discussed in our notes.
Understand the uses of calorimetry
Temperature vs. Heat
Law of conservation of energy equation
Understand and compare specific heats of various substances
Acid/Base
Properties of acids, bases and neutral substances
In the reaction represented by the equation
CH3COO– is______________.
In the reaction represented by the equation
_____________.
If [H3O+] = 1.7  10–3 M, what is the pH of the solution?
, the conjugate acid of
, the conjugate base of H3O+ is
Solutions
Give examples of heterogeneous mixtures.
Carbon dioxide dissolved in water is an example of which solute-solvent combination?
Sugar dissolved in water is an example of which solute-solvent combination?
A substance whose water solution is a good conductor of electricity is a(n)______________.
What is the molarity of a solution that contains 0.202 mol KCl in 7.98 L solution?
Give examples of Homogenous mixtures.
Be able to read the solubility curve graph, understand saturated, supersaturated, unsaturated
Gases
An ideal gas vs real gas
According to the kinetic-molecular theory, particles of matter are _____________.
Define a real gas
What determines the average kinetic energy of the molecules of any gas?
Conversion factors for pressure and temperature.
What happens to the volume of a gas during compression?
Standard temperature is exactly __________.
Standard pressure is exactly ____________.
The volume of a gas is 400.0 mL when the pressure is 1.00 atm. At the same temperature, what is the pressure at which
the volume of the gas is 2.0 L?
What causes pressure to increase if volume remains constant?
On a cold winter morning when the temperature is –13ºC, the air pressure in an automobile tire is 1.5 atm. If the volume
does not change, what is the pressure after the tire has warmed to 15ºC?
Calculate the approximate volume of a 0.600 mol sample of gas at 15.0°C and a pressure of 1.10 atm.
What is the pressure exerted by 1.2 mol of a gas with a temperature of 20.ºC and a volume of 9.5 L?
Stoichiometry
What is the formula mass of ethyl alcohol, C2H5OH?
The molar mass of H2O is 18.02 g/mol. How many grams of H2O are present in 0.20 mol?
What is the mass of 0.240 mol glucose, C6H12O6?
What is the percentage composition of CuCl2?
For the reaction represented by the equation Cl2 + 2KBr  2KCl + Br2, how many moles of potassium chloride are
produced from 119 g of potassium bromide?
For the reaction represented by the equation 2KlO3  2KCl + 3O2, how many moles of potassium chlorate are required to
produce 250 g of oxygen?
Convert from moles to grams, Liters, particles and back to moles
Chemical formulas/equations
What is the oxidation number of a pure element?
Law of conservation of mass, in relation to chemical equations, states?
Which observations indicate that a chemical reaction has occurred?
In writing a chemical equation that produces hydrogen gas, the correct representation of hydrogen gas is___________.
In an equation, the symbol for a substance in water a solution is _________.
Which coefficients correctly balance the formula equation ____NH4NO2(s) N2(g) + ____H2O(l)?
Which coefficients correctly balance the formula equation ____CaO + ____H2O  ____Ca(OH)2?
In what kind of reaction do two or more substances combine to form a new compound?
In what kind of reaction does one element replace a similar element in a compound?
In what kind of reaction does a single compound produce two or more simpler substances?
In what kind of reaction do the ions of two compounds exchange places in aqueous solution to form two new compounds?