6. What do heating and cooling curves show about a given substance? A. Chemical change B. Energy change C. Phase change D. Temperature change 7. The temperature at which a substance changes from a gas to a liquid is called the A. Condensation point B. Freezing point C. Melting point D. Vaporization point

Q: The temperature remains constant as energy is added to a substance. How may the substance be…

A: We have to tell which option is correct

Q: 12. The vapor pressure curve contains a) b) c) d) liquids and gases solids, lquids, and gases…

A: The correct option is (a)  Liquid pressure curve gives the equilibrium between liquid and gas.

Q: Sodium chloride changing from a solid to a gas is an example of evaporation sublimation O boiling

A: Which of the one is correct

Q: Molecules are closest together in a state. Select one: O Solid Plasma Gas O Liquid

A: The matter are classified into state depending on intermolecular force of attraction between them.In…

Q: Compare and contrast sublimation and evaporation.

A: A physical process is defined as the process in which the physical state of matter takes place.…

Q: How do solids and liquids behave differently?

A: Solids and liquids are the phases of matter. Solids have definite volume and shape. Liquids have…

Q: Compare boiling and evaporation.

A: Solution :       Boiling is the process in which a substance changes its state from a liquid state…

Q: solid → gas [ Select ] %3D [ Select ] solid → liquid FREEZING MELTING liquid → solid SUBLIMATION…

A: Phase change are identified below:

Q: d 10 The processes of melting and evaporation involve changes in the of a substance.

A: Melting is the change to solid to liquid at its melting point.  Evaporation is the change of liquid…

Q: What are solid substances?

A: Given,  solid substances

Q: 1 5 Name: Grade Level: Date: Chemistry Explain how heat energy affects a substance. Describe how the…

A: Any substance can exist in 3 different phases - solid,liquid and gas.In solid phase atoms are very…

Q: A heating curve for water has been provided below. C A D E G F Time Based on this graph, answer the…

A: 1. The exothermic process is the one in which the heat energy is released from the reaction and the…

Q: What is the pressure (in atm) at the critical point for this substance? a) 31.1 Ob) 73.0 Oc) 5.11…

A: Critical point : Critical point of a pure substance is defined as a point at which liquid and gas…

Q: 73 E. 67 D solid liquid 5.1 A. gas C 1.0 -78 -56 25 31 Temperature (°C) The substance at T=-78 °C…

A: Melting point is the temperature at which a substance changes its state from solid to liquid. At…

Q: Compare and explain any trends in the the graph for the change in temperature on evaporation for…

A: Evaporation is the process of conversion of liquid into vapous. Evaporation takes place at room…

Q: A list of changes is shown. Temperature decreases Intermolecular bonds become weaker Freezing…

A:

Q: After adding salt to melting ice, what change needs to happen for the ice to re-solidify

A: The phenomenon is the lowering of melting point,  it is a colligative property.

Q: The boiling point of water at sea level is 100 °C. At higher altitudes, the boiling point of water…

A: Boiling point is the temperature at which the vapour pressure of liquid become equal to atmospheric…

Q: What does the line separating the solid phase from the gas phase represent?

A: Phase diagram  as shown in question is used to identify the physical state of a sample of water…

Q: Fog is an example of a   A) liquid dispersed in gas B) solid dispersed in liquid C) liquid dispersed…

A: Colloids A substance is said to be in the colloidal state if it acquires a particle size ranging…

Q: A new linear temperature scale, degrees Zunzol (Z), is based on the freezing point and boiling point…

A: Given, Freezing point of zunzol =141.5°C Boiling point of zunzol =-24.8°C Let the freezing point on…

Q: What is the process when a gas converts to a liquid? a) sublimation b) condensation c) evaporation…

A: the process when a gas converts to a liquid is condensation

Q: Does the diagram best describe a crystalline solid, a liquid, or a gas? Explain.

A: Crystalline solid Liquid Has We have to analyze those substances to answer the following question.

Q: a) Rank the three common states of matter in order from least ordered to most ordered. b) How is…

A:

Q: What sort of relationship exists between the temperature change and the mass of the solid? Explain…

A: Heat is a form of energy that changes the state of the substance.  Temperature remains constant…

Q: Another physical property that is determined by the intermolecular forces is the states of matter.…

A:

Q: .What statements accurately describe kinetic molecular theory? Select two that apply.      The…

A: What statements accurately describe kinetic molecular theory? Select two that apply.  The…

Q: 70. This process is called , O sublimation process recrystallization process O decolorization…

A: Since cooling takes place ans crystallization occurs.  Hence  the process is recrystallizatiion  So…

Q: These three statements about Substances A, B, and C are true: The average kinetic energy of…

A: As we know kinetic energy of any substance is due to the motion of particles .And  the solids have…

Q: 27. The phase transition from solid to gas is called a. sublimation b. deposition c. evaporation d.…

A: Phase transition is when a substance changes from sold, liquid, or gas state to a different state.

Q: When a liquid is freezing,  a. its temperature decreases constantly b. the kinetic energy of its…

A: Given,                      Four statement is given related to freezing of a liquid      Required,…

Q: This topic is about endothermic and exothermic process. Why do you think volatile substances, like…

A: In this question, we want to discuss about cooling effect of volatile substances like acetone and…

Q: Explain the properties of solids and liquids using the kinetic energy molecular theory.

A: The kinetic energy molecular theory state that if the space between the molecules is more then they…

Q: Which change happens when a substance melts? O Heat energy overcomes the forces of attraction…

A: Here we have to choose correct option about melting of substances-

Q: Use the observation in the first column to answer the question in the second column. observation…

A: Here we have to relate the Enthalpy of vapourisation with boiling point of a substance.Enthaly of…

Q: When a liquid is heated, it changes into a gas. What do we call this process? Select one: O a.…

A: a) Condensing : It is a process in which vapours is being converted to liquid when cooled

Q: How does pressure affect temperature and the state of matter? Describe the relationship between…

A: Pressure raises the temperature at which a given type of matter changes states, such as going from…

Q: If the students kept applying energy to the water after it begins to boil, what is most likely to…

A: Water is in liquid state at room temperature means at  25 degree Celsius. State it may be solid…

Q: Find a molecule (something with covalent bonds) and determine its melting and boiling point.  Draw…

A: A molecule with covalent bonds and melting and boiling point has to be given. The lewis structure of…

Q: what happens as a solid melts into the liquid state?

A: The process of solid becoming a liquid is called Melting. The temperature at which melting occurs is…

Q: endothermic? Select one: a.freezing, condensation, and deposition b.melting, evaporation, and…

A: Reaction which absorb heat is called endothermic reaction.

Q: What makes nobles gasses inert ?

A: Nobel gases are the element of group 18 of the periodic table.

Q: What phase occurs when molten aluminum poured into a mold cools to form a solid object?

A: Mixing is relatively easy in the liquid state but slow and difficult in the solid-state. By melting…

Q: (a) Consider a substance where the intermolecular forces hold the molecules in fixed rigid…

A: a) Since molecules were initially rigid, and begins to flow after giving enough heat, thus the…

Q: the

A: This question is related to kinetic energy.

Q: • B A• T. Starting at Cwe increased the pressure at constant temperature. condensation Starting at B…

A:

Q: 5. If a liquid reaches the vapor pressure, what happens in the liquid?

A: The objective of the question is to explain and reason what happens when liquid molecules reach the…

Q: 20. Which state of matter exhibits the highest degree of molecular motion?

A: Higher the entropy, higher will be the molecular motion.