Why does a solid change to liquid when heat is added?

The spacing between particles decreases.

Particles lose energy.

The spacing between particles increases.

The temperature decreases.

The Second Law of Thermodynamics states that the total amount of entropy in the universe is

A steel tank filled with 62.7 L of nitrogen gas at 85.0 atm and 19°C is heated to 330°C. What is the gas pressure? _atm.

Nitrogen gas reacts with hydrogen gas to produce ammonia gas. Write a balanced chemical equation for this reaction.

Which statement describes a 0.01 M LiOH (aq) solution? a. The solution is basic with a pH less than 7. b. The solution is acidic with a pH greater than 7. c. The solution is acidic with a pH less than 7. d.

What will happen if a normal cell is placed in a hypotonic solution? g?

Where did the earth hold most of its original water

Giovanni created this chart to study for an exam. A 2-column table titled common ionic compounds. The first column labeled compound has entries sodium hydroxide (N a O H), iron oxide (F e O), calcium chloride (C a C l subscript 2), calcium carbonate

Consider the two electron arrangements for neutral atoms A and B. What is the difference between atom A and atom B? A - 1s22s22p63s1 B - 1s22s22p65s1 Atom B has lost some inner electrons.

Choose all the answers that apply. Which of the following has kinetic energy? rolling ball, moving car, book on a table, spinning top, or a falling tree.

Which of the following statements about the suns feature is true?