8. Does a reaction happen every time substances are mixed together? Explain why or why not.

Not every time substances are mixed together does a reaction occur. For a chemical reaction to take place, the reactants must have the right conditions such as sufficient energy, proper orientation, and adequate interaction to break existing bonds and form new ones. Some combinations may simply result in a physical mixture without any chemical change. Think about mixing salt and sand; they stay as individual components, while other mixtures, like vinegar and baking soda, create a lively fizz as they react.

When two substances are combined, it’s always a good idea to investigate what kind of reaction, if any, might occur. Always check if there’s a potential for changes in color, gas production, temperature shifts, or even solid formation. A common mistake is assuming that any two substances will react just because they are mixed, so take the time to research and explore the fascinating world of chemical interactions!