Choose the best definition for the following term: substitution
To choose the best definition for the term "substitution," let's break it down and consider different contexts in which it can be used.
1. In mathematics and algebra, substitution refers to the process of replacing a variable in an equation or expression with a specific value. This allows us to solve equations or simplify expressions by substituting known values for unknown variables.
2. In physics and chemistry, substitution is a type of chemical reaction where one atom or group of atoms is replaced with another atom or group of atoms in a molecule. This can result in a new compound with different properties.
3. In sports, substitution refers to the act of replacing a player with another player during a game or match. This can be done to provide rest, change tactics, or address injuries.
Based on the provided information, the best definition of substitution would depend on the context in which it is being used.