Why Are Diamonds So Hard

question 88

Multiple Choice

Why are diamonds so hard?

• A) They are formed under very cold conditions.
• B) They are held together by strong metallic bonds.
• C) They are held together by strong ionic bonds.
• D) They are held together by strong covalent bonds.

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Definitions:

Neurons

Basic working units of the brain, specialized cells designed to transmit information to other nerve cells, muscle, or gland cells.

Ganglions

Refers to swellings or cysts that commonly develop along the tendons or joints of the wrists or hands, often filled with a jelly-like fluid.

Adrenal Glands

Small glands located above the kidneys that produce a variety of hormones, including adrenaline and cortisol, which regulate metabolism, immune system, blood pressure, and response to stress.

Kidneys

Vital organs in the urinary system responsible for filtering waste from the blood, regulating electrolyte balance, and maintaining fluid balance.