Spring Benchmark #2 Review

Identify the coefficients to properly balance the following equation: Na + AuCl3 NaCl + Au 3,3,1,1 3,1,3,1 1,3,1,3 1,1,3,3

Identify the potential energy of the products. A. 50 kJ B. 200 kJ C. 100 kJ D. 150 kJ

2H2 + O2 2H2O If 3.25 moles of hydrogen react with oxygen, how many grams of water can be produced? A. 100 g B. 117 g C. 29.25 g D. 58.5 g

Calculate the enthalpy change for the reaction. A. 200 kJ B. 50 kJ C. 100 kJ D. 250 kJ

What effect does a catalyst have on a reaction? A. lowers the activation energy required B. decreases enthalpy C. increases enthalpy D. no change

Write the reaction for the combustion of propane (C3H8).

In any chemical reaction, the mass of the products is ___ the mass of the reactants. 10 Greater than Less than Equal to None of the above 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30

Na + AuCl3 NaCl + Au Identify the type of reaction shown above. A. Single replacement B. synthesis C. Double replacement D. decomposition

Identify the melting point of the substance at 73 atm. A. 216.6 K B. 304.25 K C.197.5 K D. 0 K

Balance the following equation: ___K + ___O2  __ K2O 10 4,1,2 4,2,1 1,1,1 2,4,1 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30

Which gas composes the greater percentage of the atmosphere? 10 Helium Hydrogen Nitrogen Oxygen 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30

The instrument used to measure temperature is the ___. 10 Balance Thermometer Barometer Graduated cylinder 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30

Identify the phase chage when the temperature changes from 197 Identify the phase chage when the temperature changes from 197.5 K to 250 K if the pressure remains constant at 73 atm. A. freezing B. sublimation C. Deposition D. melting

In the metric system, temperature is measured on the ___ scale. 10 Celsius Fahrenheit Cesium Francium 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30

Calculate the energy required to melt 45 g of ice. Heat of fusion=334 Heat of vaporization=2260 A.101,700J B.15030J C.0.134J D.6.65J

Regular Chem only Identify the type of particle that can be blocked by concrete or lead A. Alpha B. Beta C. Gamma

A child notices her balloon is smaller inside her air conditioned house than outside in the sun. This is an example of ___ law. 10 Avogadro’s Boyle’s Charles’ Graham’s 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30

What is the normal sublimation point of the substance? A. 216.6 K B. 304.25 K C. 197.5 K D. 0 K

According to Boyle’s law, the pressure of a gas will ___ when the volume decreases. 10 Increase Decrease Remain the same 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30

Air consists of ___. One kind of gas A mixture of several gases 10 One kind of gas A mixture of several gases A single compound Only non-reactive gases 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30

All of the following are pressure units except 10 mm Hg atm kPa K 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30

As the temperature increases, the motion of particles ___. 10 Increases Decreases Remains the same 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30

No molecular motion occurs ___. 10 At night In the atmosphere At absolute zero At the freezing point 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30

Of the three states of matter, ___ is the highest energy. 10 Solid Liquid Gas 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30

Particles of matter in the ___ state are moving very quickly and do not form a definite pattern. 10 Solid Gaseous Atomic Nuclear 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30

As the temperature in a tank of propane increases, the pressure ___. 10 Increases Decreases Remains constant Decreases, then increases 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30

Because of its high heat capacity, the temperature of ___ changes slower than most substances. 10 Alcohol Oil Gasoline Water 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30

STP is ___. 0oC and 1 atm pressure 0oK and 1 atm pressure 10 0oC and 1 atm pressure 0oK and 1 atm pressure 25oC and 1 atm pressure 273oC and 700 mm Hg 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30

The process by which a liquid is converted to a gas without boiling is 10 Precipitation Evaporation Condensation Vaporization 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30

The __ the altitude, the lower the pressure. 10 Lower Higher 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30

What volume will one mole of a gas occupy under STP? 10 1 L 22.4 L 273 L 293 L 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30

What idea can be used to explain both Boyle’s and Charles’ laws? 10 Atomic theory Kinetic molecular theory Law of conservation of matter Law of conservation of energy 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30

Which law explains why bread rises when baked? 10 Avogadro’s Boyle’s Charles’ Graham’s 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30

Which law explains why soft drinks “pop” when opened? 10 Avogadro’s Boyle’s Charles’ Kelvin’s 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30

Any time physical or chemical changes occur, you also ___. 10 Have energy changes Gain mass Lose energy Have color changes 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30

In a(n) __ reaction, energy is given off. 10 Endothermic Exothermic Isothermic 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30

The energy in compounds is held in the 10 Oxygen atoms Hydrogen atoms Chemical bonds between atoms Water molecules 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30

The minimum energy needed to start a reactions is called the 10 Energy of formation Lattice energy Bond energy Activation energy 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30

When chemicals are mixed in a test tube and the test tube becomes hotter, a __ reaction has occurred. 10 Exogenic Exothermic Endogenic Endothermic 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30

A compound that speeds up a reaction without being consumed itself is a(n) 10 Additive Catalyst Raw material Resource 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30

If you increase the temperature, the rate of reaction will 10 Increase Decrease Remain the same 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30

In chemical equations, “aq” means 10 In a water solution A crystal A pure compound A gas 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30

In a combustion reaction, the products are 10 Hydrogen Carbon dioxide and water Oxygen and water oxygen 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30

The chemicals on the left side of the arrow are called 10 Molecules Reactants Products Sugar 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30