Matter, Particles, and Atoms Quiz

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What happens to the spaces between particles of a substance when the substance contracts?

The spaces remain the same.

The spaces decrease. (correct)

The spaces fluctuate.

The spaces increase.

How does gas pressure change with temperature?

Decreases with temperature.

Remains constant with temperature.

Fluctuates with temperature.

Increases with temperature. (correct)

Which statement best describes atmospheric pressure?

Pressure exerted by gas particles in the atmosphere. (correct)

Pressure exerted by solid particles in the atmosphere.

Pressure exerted by plasma particles in the atmosphere.

Pressure exerted by liquid particles in the atmosphere.

What does density of a substance indicate?

Its mass per unit volume. Signup and view all the answers

When an object is denser than its surrounding medium, what happens to the object?

It sinks in the medium. Signup and view all the answers

How does density change with temperature for liquid or gas particles?

Density increases when particles move faster. Signup and view all the answers

What effect does decreasing the volume of a closed container have on gas pressure?

Increases gas pressure. Signup and view all the answers

How does cooling affect the movement of particles in a substance?

Particle movement slows down. Signup and view all the answers

What is the term used to describe the process where solute particles move apart and become evenly distributed among solvent particles?

Dissolving Signup and view all the answers

What law states that the total mass of solute and solvent is conserved in dissolving?

Law of Conservation of Mass Signup and view all the answers

In dissolving, what may differ from the sum of the volumes of the solute and solvent?

Volume Signup and view all the answers

What phenomenon is observed when substances expand upon heating and contract upon cooling?

Thermal Expansion and Contraction Signup and view all the answers

What effect does heating have on the movement of particles within a substance?

Causes them to move faster Signup and view all the answers

Which state of matter is characterized by particles being closely packed in a regular pattern and vibrating about a fixed position?

Solid Signup and view all the answers

What term describes the process where solute particles are evenly distributed among solvent particles?

Diffusion Signup and view all the answers

'Each vibrates about a fixed position' is a characteristic used to define which state of matter?

Solid Signup and view all the answers

What is the basic unit of matter?

Atom Signup and view all the answers

What does the particle theory state about the particles in matter?

Different substances are made up of different particles. Signup and view all the answers

Which statement accurately describes the movement of particles in gases?

Particles move around easily. Signup and view all the answers

What is the role of molecules in forming matter?

Molecules are formed from atoms. Signup and view all the answers

How does the particle model describe the arrangement of particles in solids?

Particles are closely packed with no regular pattern. Signup and view all the answers

Which characteristic differentiates particles in various substances according to the text?

Size and mass Signup and view all the answers

What is the significant difference between atoms and molecules based on the text?

Atoms are the basic unit of matter, while most molecules are formed from two or more atoms. Signup and view all the answers

How do particles in liquids differ from particles in gases based on the text?

Particles in liquids move freely in all directions. Signup and view all the answers