Phase Changes - Page 6
Questions
- Do batteries change the way they work by temperature? Will it work when the batteries are heated, cooled, or room temperature?
- When acid and calcium carbonate are added together in a tube, and the CO2 is collected in a tube of limewater, what are all the signs that a chemical has taken place?
- What is the melting temperature of iron ?
- How much gram of urea dissolved in 100 gm of water to create a difference of 105°C between freezing point and boiling point?
- When you melting naphthalene balls are they convert to liquid?
- What physical transformation is occurring when naphthalene balls gets smaller as time goes by?