ChemCafe — science, chemistry and physics made simple

Why Hint Water Doesn’t Contain Any Preservatives Hint water avoids preservatives because it contains only pure water and natural fruit essences, lacks sugar that supports microbial growth, is sealed to...

Understanding the Correct Depiction of a Chocolate Molecule There is no single “chocolate molecule” because chocolate is a complex mixture of many compounds. The molecule most commonly referenced as the...

Cat Broke Our Galileo Thermometer, What Do I Do? First, identify the substance inside the broken Galileo thermometer to assess its risk, then clean it up carefully while taking safety...

Food Meets Chemistry: Orzotto vs. Risotto Orzotto and risotto are similar dish concepts where grain is cooked to a creamy consistency, but orzotto uses barley (orzo) instead of rice. The...

Is It Safe to Work With Polyurethane? Working with polyurethane is generally safe when proper precautions and safety protocols are followed because the original toxic components, isocyanates, are converted into...

Is It Worth Doing a Masters in Chemistry? A Masters in Chemistry is generally worth pursuing if it aligns with career goals, offers financial or experiential benefits, and provides opportunities...

What the Heck Is Enthalpy? Enthalpy is the total heat energy of a system, representing its internal energy plus the energy required to establish its physical state at constant pressure....

Is CH2Cl2 (Dichloromethane) Polar or Non-Polar? CH2Cl2 (dichloromethane) is polar. It has a net dipole moment due to its molecular geometry and the difference in electronegativities between its atoms. This...