Chemistry Unit 5 Quiz Log

[5.5] Which statement describes a physical property of copper? It reacts with strong acids. It can be reshaped by a force. It ignites at high temperatures. It can combine with oxygen.

It can be reshaped by a force.

[Practice Test] Which statement describes a chemical property of water? It reacts with sodium metal. It has a melting point of 0°C. It has a density of about 1 g/mL. It is clear and colorless.

It reacts with sodium metal.

[5.5] A student performs the following experiment.Step 1: She pours a colorless solution into a beaker that contains another colorless liquid. Yellow particles appear in the liquid.Step 2: She lets the yellow particles settle in the beaker and then separates the colorless liquid by decantation.What has most likely occurred in the beaker? a chemical change in step 1 and a physical change in step 2 a physical change in step 1 and a chemical change in step 2 chemical changes in both step 1 and step 2 physical changes in both step 1 and step 2

a chemical change in step 1 and a physical change in step 2

[5.5] Which of these is a chemical property of a substance? texture ductility reactivity conductivity

reactivity

[5.5] Which procedure could a student use to examine an intensive property of a rectangular block of wood? Find the mass. Record the length. Measure the volume. Determine the density.

Determine the density.

[Practice Test] A gaseous substance turns directly into a solid. Which term describes this change? deposition evaporation melting sublimation

deposition

[Practice Test] Which commercial technology commonly uses plasmas? a radio a race car a television a microwave oven

a television

[5.5] Which of these is an example of investigating an intensive property? weighing sand in a bag measuring the length of wire determining if a rock is magnetic recording the volume of water in a cylinder

determining if a rock is magnetic

[5.1] The table describes a gas stored in four different containers.Properties of Stored GasContainerProperties1· Low number of collisions with container walls· Medium average kinetic energy· Large number of particles2· Large number of collisions with container walls· Medium average kinetic energy· Small number of particles with little spaces between them3· Large number of collisions with container walls· High average kinetic energy· Large number of particles with large spaces between them4· Few collisions with container walls· Low average kinetic energy· Small number of particlesWhich container has gas stored at the highest temperature? 1 2 3 4

3

[5.1] Which statement best describes the collisions of gas particles according to the kinetic-molecular theory? When particles pass close enough to one another, their attractions pull them together, and then they bounce apart with no gain or loss of energy. As particles travel in straight lines, their paths sometimes meet, and then they bounce apart with no gain or loss of energy. When particles pass close enough to one another, their attractions pull them together, and then they bounce apart with a loss of energy. As particles travel in straight lines, their paths sometimes meet, and then they bounce apart with a loss of energy.

As particles travel in straight lines, their paths sometimes meet, and then they bounce apart with no gain or loss of energy.

[Practice Test] The diagram below shows the different phase transitions that occur in matter.Which best describes the process that arrow 1 represents? Molecules are speeding up during boiling. Molecules are depositing as ice on a surface. Molecules are slowing down during condensing. Molecules are moving from stationary positions.

Molecules are speeding up during boiling.

[Practice Test] Which statement describes a limitation of the kinetic-molecular theory for a gas? The theory assumes that particles do not experience intermolecular forces. The theory states that pressure is inversely proportional to volume. The theory assumes that particles are in random and continuous motion. The theory states that pressure increases with temperature.

The theory assumes that particles do not experience intermolecular forces.

[Practice Test] Why do amorphous solids not have a long-range order in the arrangement of their particles? Their formation involves very rapid cooling. They do not have enough particles. Their particles eventually change positions. Their particles always stay in the same positions.

Their formation involves very rapid cooling.

[5.1] The closeness of particles of gas and their low speeds allow intermolecular forces to become important at certain pressures and temperatures. Which best describes this statement? This is a limitation of the kinetic-molecular theory. This is a postulate of the kinetic-molecular theory. This describes ideal gas behavior using the kinetic-molecular theory. This describes ideal gas behavior without the kinetic-molecular theory.

This is a limitation of the kinetic-molecular theory.

[Practice Test] Consider the temperature versus time graph below.At what temperature is the substance a heated gas? at 100°C below 0°C above 100°C between 0°C and 100°C

above 100°C

[5.5] Which term refers to a property that depends only on the amount of a substance? flammability extensive intensive reactivity

extensive

[Practice Test] The diagrams show gases that are stored in two separate but similar containers. https://media.edgenuity.com/evresources/3210-05-01/mc014-1.jpg If both gases are at the same temperature, which one has the greater pressure? gas 1 because the particles are moving much faster gas 1 because it has fewer particles that are close together gas 2 because it has more particles that are colliding gas 2 because the particles have more space between them

gas 2 because it has more particles that are colliding

[Practice Test] When the process of condensation occurs, the kinetic energy of particles is insufficient to overcome intermolecular forces. becomes independent of temperature. becomes exactly equal to the intermolecular forces. easily overcomes the intermolecular forces.

is insufficient to overcome intermolecular forces.

[5.1] According to the kinetic-molecular theory, the collision between two ideal gas particles is a result of neither attraction nor repulsion. repulsion from the wall of the container. repulsion from other gas particles. attraction between the two particles.

neither attraction nor repulsion.

[5.1] Which statement describes effusion? It occurs when a gas passes through a tiny hole. It occurs when a liquid passes through a tiny hole. It occurs when gas molecules disperse throughout a container. It occurs when a liquid disperses throughout a container.

It occurs when a gas passes through a tiny hole.

[Practice Test] Which is an aspect of the kinetic-molecular theory and can be used to explain the compressibility of plasmas? Particles move independently of one another and are widely spaced. Particle kinetic energy increases with increasing temperature. Particles exert no attractive or repulsive force on one another. Particles always move even when they have fixed positions.

Particles move independently of one another and are widely spaced.

[5.5] Which list includes only physical properties? density, reactivity, and conductivity boiling point, conductivity, and color color, odor, and flammability flammability, reactivity, and ductility

boiling point, conductivity, and color

[5.1] Which observation indicates that the kinetic-molecular theory has limited use for describing a certain gas? Gas particles are acting like tiny, solid spheres. Gas particles are obeying Newton's laws of motion. Increasing pressure is reducing the volume of the gas. Increasing collisions of gas molecules will increase energy between them.

Increasing collisions of gas molecules will increase energy between them.

[Practice Test] Which best characterizes a crystal? a number of high speed particles moving randomly a dense substance that is hard and incompressible a high-energy state of matter made up of a swirling, ionized gas a loose association of particles moving past one another

a dense substance that is hard and incompressible

[Practice Test] When a strip of magnesium metal is touched to a flame, a bright light and a whitish substance are produced. Why is the burning of magnesium considered a chemical change? because the metal reaches a high temperature because the metal begins to melt because a new substance is formed because the metal is malleable

because a new substance is formed

[5.5] In order to observe a ✔ chemical physical electrical thermal property of a substance, the substance must interact with another substance, such as when gasoline burns or when sodium metal reacts with water.

Chemical

[Practice Test] Which is a postulate of the kinetic-molecular theory? Gas particles have a small volume relative to the spaces between them. Gas particles have a large volume relative to the spaces between them. Gas particles are very small in size and always move slowly. Gas particles are very large in size and always move slowly.

Gas particles have a small volume relative to the spaces between them.

[5.5] A geochemist examines a piece of metal that he found in the soil. He performs tests to identify the metal from its density, electrical conductivity, and melting point. Which statement best describes his investigation? He is determining physical properties that are sufficient to identify the metal. He is determining chemical properties that are sufficient to identify the metal. He is determining physical properties that are insufficient to identify the metal. He is determining chemical properties that are insufficient to identify the metal.

He is determining physical properties that are sufficient to identify the metal.

[5.1] A substance is made up of slow-moving particles that have very little space between them. Based on this information, what can most likely be concluded about this substance? It is not a gas because its particles do not move continuously. It is a gas because its particles move continuously in a straight line. It is not a gas because its particles do not have large spaces between them. It is a gas because its particles move in many different directions.

It is not a gas because its particles do not have large spaces between them.

[5.5] The table below shows the freezing points of four substances.SubstanceFreezing point (°C)Benzene5.5Water0Butane-138Nitrogen-210The substances are placed in separate containers at room temperature, and each container is gradually cooled. Which of these substances will solidify before the temperature reaches 0°C? benzene water butane nitrogen

benzene

[5.1] Which step will decrease the pressure of a gas inside a closed cubical container? increasing the number of moles of gas decreasing the volume of the container increasing the speed of the gas particles decreasing the temperature inside the container

decreasing the temperature inside the container

[5.1] The diagram shows the movement of particles from one end of the container to the opposite end of the container.Which event is most likely occurring? diffusion because particles move from regions of high concentration to regions of low concentration diffusion because particles move from regions of low concentration to regions of high concentration effusion because there is a movement of a gas through a small opening into a larger volume effusion because there is a movement of a gas through a large opening into a smaller volume

effusion because there is a movement of a gas through a small opening into a larger volume

[Practice Test] In the diagram below, particles of the substance are moving from the liquid phase to the gas phase at the same rate as they move from the gas phase to the liquid phase.The gas and liquid are at equilibrium. a high vapor pressure. a low vapor pressure. zero vapor pressure.

equilibrium.

[5.1] Which two conditions can limit the usefulness of the kinetic-molecular theory in describing gas behavior? high pressure and low temperatures high pressure and medium temperatures low pressure and low temperatures low pressure and medium temperatures

high pressure and low temperatures

[Practice Test] Which sequence represents the relationship between pressure and volume of an ideal gas as explained by the kinetic-molecular theory? more gas particles more collisions higher pressure smaller volume crowded particles less collisions lower pressure smaller volume crowded particles more collisions higher pressure more gas particles more kinetic energy more volume higher pressure

smaller volume crowded particles more collisions higher pressure