Multiple Choice
Which of the following is a pure substance?
1. Intro to General Chemistry
Classification of Matter
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Which of the following best describes the composition of plasma?
A
A mixture of neutral atoms and molecules
B
A collection of charged particles, including ions and electrons
C
A homogeneous mixture of gases
D
A solid lattice of atoms
Verified step by step guidance1
Understand the concept of plasma: Plasma is one of the four fundamental states of matter, distinct from solid, liquid, and gas. It consists of charged particles, including ions and electrons.
Recognize that plasma is formed when a gas is energized to the point where electrons are freed from atoms, resulting in a collection of charged particles.
Differentiate plasma from other states of matter: Unlike a solid lattice of atoms, plasma does not have a fixed shape or volume. Unlike a homogeneous mixture of gases, plasma contains charged particles rather than neutral atoms and molecules.
Consider the properties of plasma: Plasma conducts electricity and is affected by magnetic fields due to the presence of charged particles.
Conclude that the best description of plasma is 'A collection of charged particles, including ions and electrons,' as this captures the essence of its composition and behavior.
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