Which statement about compatibility tools is true?

• A. CAMEO Chemicals
• B. CCPS Chemical Reactivity Worksheet (CRW)
• C. Both are free
• D. Neither are free

Answer: (C)

The main idea here is knowing what resources are available to check chemical compatibility and whether they cost money. Both CAMEO Chemicals and the CCPS Chemical Reactivity Worksheet are accessible at no cost, which makes them practical for learning and quick reference. CAMEO Chemicals is an online database that provides chemical property data, hazard information, and compatibility guidance, helping you see how substances might react under different conditions. The CCPS Chemical Reactivity Worksheet offers a straightforward, structured approach to evaluating reactivity hazards and identifying potentially incompatible chemical pairs or reaction scenarios. Because both tools can be used without paying, you have a free, reliable means to practice assessing compatibility and reactivity hazards, which is why the statement that both are free is true.