Which of the following best describes the relationship between moles and particles in chemistry?

• A. Moles and particles are unrelated units in chemistry.
• B. One mole of a substance contains 1.00 × 10^{6} particles.
• C. The number of particles in a mole depends on the type of substance.
• D. One mole of a substance contains 6.022 × 10^{23} particles.

Answer: (D)

Verified step by step guidance

1. Understand that a mole is a fundamental unit in chemistry used to count particles such as atoms, molecules, or ions.
2. Recall Avogadro's number, which defines the number of particles in exactly one mole of any substance.
3. Recognize that Avogadro's number is a constant value: \$6.022 \times 10^{23}$ particles per mole, regardless of the substance type.
4. Note that this means one mole of any substance contains exactly \$6.022 \times 10^{23}\( particles, not \)1.00 \times 10^{6}$ or a variable number depending on the substance.
5. Conclude that the correct relationship is: One mole of a substance contains \$6.022 \times 10^{23}$ particles.