Changes in Matter Answers

The arrows in the chart below represent phase transitions.Which arrows represent the phase transitions in which heat energy is gained?

Consider the statement below.“When nitrogen is liquefied, heat is released.”Is this statement true or false?

Consider the temperature versus time graph below.In which region is the substance in both the solid phase and the liquid phase?

A solid substance turns directly into a gas. Which term describes this change?

The diagrams below represent the four states of matter. Diagram 1 Diagram 2 Diagram 3 Diagram 4Which diagram represents the phase that occurs after a solid melts?

The diagram below shows the different phase transitions that occur in matter. Which arrow would most likely represent the phase change that involves the same amount of energy as arrow 1?

The diagram below shows the different phase transitions that occur in matter. Which arrow would most likely represent the phase change that occurs when silver is poured into a mold and cools to become a solid bar?

Which energy change occurs during boiling?

Consider the temperature versus time graph below.At what temperature is the boiling point of this substance?

In which phase transition do molecules move directly from a state involving vibration of particles in a fixed position to a state involving random movement of high-speed particles?

is initially present in a state where its molecules are far apart. During a change of state, its molecules slow down. Which change of state has most likely taken place?

Which example involves a phase change in which heat energy is released by the substance?