Chemistry CDF Vocabulary

Frequency

• Number of wave cycles passing a point per second.

• The speed at which a wave travels through a medium.

• The amplitude of a wave measured in decibels.

• The wavelength of a wave measured in meters.

Scientific Investigation

• A method of cooking scientifically tested recipes.

• A process used to systematically explore and answer questions using the scientific method.

• A way to conduct surveys and gather opinions.

• An artistic approach to understanding nature.

Neutrons

• Positively charged particles located in the nucleus of an atom.

• Neutral (no charge) particles located in the nucleus of an atom.

• Negatively charged particles that orbit the nucleus of an atom.

• Particles that are found in the electron cloud surrounding the nucleus.

Catalyst

• A substance that slows down a chemical reaction.

• A substance that speeds up a chemical reaction without being used up.

• A substance that changes color during a reaction.

• A substance that is consumed in a chemical reaction.

Decomposition

• A reaction in which a compound breaks down into two or more products.

• A reaction where two or more substances combine to form a single product.

• A reaction that involves the transfer of electrons between two species.

• A reaction that occurs at a constant temperature and pressure.

Synthesis

• A chemical reaction where two or more substances combine into a new compound.

• A process where a single compound breaks down into two or more simpler substances.

• A reaction that involves the exchange of ions between two compounds.

• A method of separating mixtures into their individual components.

Ionic Bonding

• A bond formed by sharing electrons between two nonmetals.

• A bond formed by the transfer of electrons between a metal and a nonmetal.

• A bond formed by the attraction between two positively charged ions.

• A bond formed by the repulsion of two negatively charged ions.

Hydrogen Bonding

• A strong bond between hydrogen and an electronegative atom.

• A weak bond between hydrogen and an electronegative atom (e.g., oxygen, nitrogen).

• A bond formed between two hydrogen atoms.

• A bond that occurs only in ionic compounds.

Sublimation

• A phase change where a substance goes directly from solid to gas.

• A process where a gas turns into a liquid.

• A phase change where a substance goes from liquid to solid.

• A chemical reaction that produces heat.

Ionic Bond

• A bond formed by sharing electrons between atoms.

• A bond formed when one atom gives electrons to another, creating oppositely charged ions.

• A bond that occurs between two nonmetals.

• A bond that involves the transfer of protons between atoms.