10th Grade Honors Chemistry Final Exam Questions And Answers Well Illustrated 2024.
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10th Grade Honors Chemistry
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10th Grade Honors Chemistry
10th Grade Honors Chemistry Final Exam Questions And Answers Well Illustrated 2024.
Thermochemistry - correct answer. The study of heat effects in chemical reactions.
Exothermic Reaction - correct answer. A reaction that releases energy in the form of heat.
Examples: Combustion...
If heat is released as in an exothermic process the temperature will increase, but the
product will have less energy than the reactant so enthalpy will be negative.
If heat is absorbed as in an endothermic process the temperature will decrease, but the
product will have more energy than the reactant so enthalpy will be positive.
Sign of ΔH in a Reversed Equation - correct answer. Sign changes if equation is
reversed.
Heat Capacity - correct answer. Amount of heat needed to raise the temperature of an
object 1° Celsius.
Specific Heat - correct answer. Amount of heat needed to raise the temperature of 1
gram of a substance.
Heat - correct answer. Transfer of kinetic energy from a hotter object to a colder
object.
Enthalpy Problems - correct answer. 1. Convert given mass to moles.
2. Use ΔH (Given in problem)/# of mols from balanced equation.
Example: State whether the following reaction is endothermic or exothermic and
whether the reactants or the products contain more stored heat energy. Then find the
quantity of head transferred when 6.29 grams of sulfur dioxide completely.
Elastic Collision - correct answer. Collision particles of an ideal gas undergo.
Ensures that energy is not lost.
In collisions between ideal gas molecules, the total energy of the gas... - correct
answer. remains the same.
, Volatile - correct answer. Evaporates easily.
Pressure - correct answer. Force per unit area.
760 mm Hg = 1 atm = 101,325 Pa = 101.325 kPa.
Boyle's Law - correct answer. Pressure of a gas is inversely proportional to its volume.
The temperature of a gas doesn't change.
P1V1 = P2V2.
Charle's Law - correct answer. At constant pressure, the volume of a fixed
amount of gas is directly proportional to its absolute temperature.
V=k2T
V1T2=V2T1.
Avogadro's Law - correct answer. Equal volumes of gases at the same
temperature and pressure contain an equal number of particles.
V=k3n.
Manometer Measures - correct answer. Difference in pressure between the two
columns of mercury.
Physical Properties of Gases/Kinetic Molecular Theory - correct answer. 1. A gas
consists of small particles that have mass.
2. The particles in a gas must be separated from each other by relatively long distances.
3. The particles of a gas must be in a constant, rapid motion.
4. Collision of gas particles are perfectly elastic.
5. The average kinetic energy (energy of motion KE=mv^2/2) articles depend only on
the temperature of the gas. If you increase the temperature of a gas, you increase the
movement of molecules which increases the pressure.
6. Gas particles exert no force on each other.
Four things that change with relation to gas: - correct answer. - Amount of gas.
- Pressure.
- Temperature.
- Volume.
Amount of Gas - correct answer. You can relate the number of moles and the mass to
the number of gas particles.
n = mass / molar mass.
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