Electricity and Chemistry Concepts

A set of flashcards covering key concepts from electricity and chemistry, including Ohm's Law, the law of conservation of matter, and differences between cable and wireless charging.

Ohm's Law

A formula used to calculate the relationship between voltage (V), current (I), and resistance (R) in an electrical circuit, represented as I = V/R.

Current (I)

The flow of electric charge, measured in amperes (A), representing how fast electric charge moves through a conductor.

Voltage (V)

The electric potential difference that pushes electric charge through a circuit, analogous to water pressure in a pipe.

Resistance (R)

The opposition to the flow of electric current, measured in ohms (Ω), affecting how much current will flow for a given voltage.

Law of Conservation of Matter

A scientific principle stating that matter cannot be created or destroyed, only rearranged in chemical reactions.

Example of Law of Conservation of Matter

When vinegar reacts with baking soda, producing carbon dioxide gas, the total mass of the closed container remains constant before and after the reaction.

Litmus Test

A method of determining whether a solution is acidic or basic; blue litmus paper turns red in an acid.

Cable Charging

A method of transferring energy using a physical connection (a wire) between a power source and a device.

Wireless Charging

A method of transferring energy using electromagnetic fields to transfer energy through the air, eliminating the need for a physical connection.