Changing state & kinetic theory🌷 Flashcards
What is the kinetic theory of matter?
The kinetic theory of matter states that all matter is made up of tiny particles that are in constant motion.
True or False: The kinetic energy of particles increases with temperature.
True
Fill in the blank: In solids, particles are _______ packed together and vibrate in place.
closely
What happens to the particles in a substance when it is heated?
The particles gain kinetic energy and move faster.
Multiple Choice: Which state of matter has a definite shape and volume? A) Gas B) Liquid C) Solid
C) Solid
What is the process called when a solid turns into a liquid?
Melting
True or False: Gases have a definite volume.
False
Fill in the blank: The temperature at which a liquid turns into a gas is called its _______.
boiling point
What is condensation?
Condensation is the process by which a gas turns into a liquid.
Multiple Choice: Which of the following involves a change of state? A) Heating B) Cooling C) Both A and B
C) Both A and B
True or False: In liquids, particles are free to move but remain close together.
True
What is sublimation?
Sublimation is the process where a solid changes directly into a gas without becoming a liquid.
Fill in the blank: The change from gas to solid is known as _______.
deposition
What is the relationship between particle motion and temperature?
As temperature increases, particle motion increases.
Multiple Choice: Which state of matter has the most kinetic energy? A) Solid B) Liquid C) Gas
C) Gas
True or False: The particles in a gas are packed closely together.
False
What are the three common states of matter?
Solid, liquid, gas
Fill in the blank: The change from liquid to solid is called _______.
freezing
What occurs during the melting process?
The solid absorbs heat and its particles gain energy, allowing them to move more freely.
Multiple Choice: Which process involves the removal of heat? A) Melting B) Freezing C) Boiling
B) Freezing
True or False: The kinetic theory can explain the behavior of gases in terms of particle motion.
True
What is thermal energy?
Thermal energy is the total kinetic energy of all the particles in a substance.
Fill in the blank: The change from solid to gas is called _______.
sublimation
What is the effect of pressure on the state of matter?
Increasing pressure can force a gas to become a liquid.
Multiple Choice: Which state of matter has the least kinetic energy? A) Solid B) Liquid C) Gas
A) Solid
True or False: During boiling, a liquid’s temperature remains constant.
True
