Question

as heat energy increases,__________
o a particles move slower
o b particles are closer
o c particles move faster and closer
o d none of the above
question 8 (5 points)
pressure also affects the state of matter.
o true
o false
question 9 (5 points)
how many days do you have out of school in the moth of november before thanksgiving break starts?
o a 1
o b 2
o c 0
o d 4

Explanation:

• For the first question: When heat energy increases, particles gain kinetic energy. Kinetic energy is related to the motion of particles. An increase in heat energy means particles move faster. Also, when heat is added (in some cases like melting or vaporization, the distance between particles changes, but generally, the idea that they move slower (a) is wrong as more energy means more motion. Option b and c about being closer are incorrect as heat (in most common scenarios like heating a gas or liquid in a non - confined space) causes expansion (particles moving apart in some cases). So, none of the first three options (a, b, c) are correct.
• For the second question: Pressure is one of the factors (along with temperature) that can affect the state of matter. For example, increasing pressure can cause a gas to liquefy (change of state). So the statement "Pressure also affects the state of matter" is True.

Answer:

• First question: d. none of the above
• Second question: True