Determine what information you already have.
When you solve a chemistry problem, start by looking for the facts that are already given and the quantities you can trust, like measured masses, concentrations, temperatures, or the chemical formulas in the question. Think of it like a detective: circle the numbers and units, write down any relationships the problem states, and note what is constant and what can change. If an equation or law is named in the problem, write that down too, because it tells you how the given facts might link to what you need. Organizing the known information first makes the rest of the work easier and helps you avoid mixing up units or variables later.
A common mistake is ignoring units or failing to convert them, which can lead to wrong answers even if the math is correct, so always check and convert units early. Another error is assuming a value is given when it is actually something you must calculate, so mark which items are truly known and which are unknown; if unsure, reread the problem to confirm. Students sometimes skip writing down the given relationships like conservation of mass or mole ratios, so jot down relevant equations immediately to keep the work clear.
Check out w w w dot gumball degree dot com for more videos and resources on how to identify and use given information in chemistry problems.
Identify Given Information Quickly
- Look for given facts
- Identify trustworthy quantities
- Circle numbers and units
- Note constant versus changing items
- Write down named equations
Common Chemistry Mistakes to Avoid
- Ignoring units or failing conversions
- Assuming values are given incorrectly
- Skipping relevant equations and relationships
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