Definition: A shiny mineral that is usually colorless or white and contains sodium and boron, often used as a source of boron ore.

Example: Kernite is often found in arid regions where boron minerals are abundant.

Definition: A type of fossilized organic material found in sedimentary rocks that can produce oil when heated.

Example: Geologists study kerogen to understand the potential for oil extraction in certain rock formations.

Definition: A colorless and toxic gas that has a strong smell, mainly used in chemical reactions to add acetyl groups to other substances.

Example: Ketene is often used in organic chemistry for acetylation reactions.

Definition: A type of complex nitrogen-containing substance that is related to indole and includes compounds like methyl ketol.

Example: Methyl ketol is an example of a ketol that is studied in organic chemistry.

Definition: A type of organic compound that contains a carbonyl group (C=O) bonded to two carbon atoms. These compounds are often used in various chemical processes and can be found in substances like acetone.

Example: Acetone is a common ketone used as a solvent in many industries.

Definition: A type of sugar that has a ketone group in its structure, such as fructose.

Example: Fructose is a common example of a ketose found in many fruits.

Definition: A specific frame in an animation or video that marks a significant point, often used as a reference for creating the frames in between.

Example: The animator set the keyframe to define the starting position of the character in the scene.

Definition: To create a specific point in an animation where a change occurs, allowing for smooth transitions between different states.

Example: The animator will keyframe the character's movements to make them look more realistic.

Definition: Not needing a key to operate or function.

Example: Many modern cars come with keyless entry systems that allow you to unlock the doors without using a physical key.

Definition: A central stone in an arch that holds the other stones in place, or something that is essential for supporting a system or structure.

Example: The keystone of the arch was carefully placed to ensure its stability.

Definition: A narrow slot or groove designed to hold a key, often found in machinery or locks.

Example: The mechanic inserted the key into the keyway to secure the wheel in place.