Motion of Atoms and Molecules

What is the main concept explained by the Molecular-Kinetic Theory?

• How atoms and molecules are stationary

• How the movement of atoms and molecules explains material properties

• How molecules do not interact with each other

• How temperature affects the color of substances

When a substance is heated, what happens to its atoms and molecules?

• They move slower

• They stop moving

• They move faster

• They become heavier

What change occurs when water is heated according to the text?

• Water turns into ice

• Water turns into steam

• Water becomes a solid

• Water loses its color

What does kinetic energy refer to in the context of molecular motion?

• Energy due to the position of molecules

• Energy due to the movement of molecules

• Energy stored in chemical bonds

• Energy related to electrical charges

Which state of matter has molecules that move the fastest?

• Solid

• Liquid

• Gas

• Plasma

What can experiments show us about the Molecular-Kinetic Theory?

• How molecules stop moving

• How materials change with different temperatures

• How materials become invisible

• How molecules break down into atoms

According to the text, what does increased movement of molecules result in?

• A decrease in temperature

• A change in state of matter

• A reduction in volume

• An increase in density

What is an example of a state change mentioned in the text?

• From gas to liquid

• From solid to gas

• From liquid to gas

• From plasma to solid

What role does temperature play in molecular movement?

• It slows down molecular movement

• It makes molecules stop moving

• It speeds up molecular movement

• It has no effect on molecular movement

How can scientists use the Molecular-Kinetic Theory?

• To predict how materials will behave under different conditions

• To make substances change color

• To create new elements

• To stop molecular movement