When a substance melts, is energy being added or removed?

How did you use science for your summer vacation? List ideas

How much energy is needed to raise the temperature of 125g of water from 25.0oC to 35.0oC? The specific heat of water is 4.184J/goC.

How can you tell if an atom is a metal or not

How does the volume of a kilogram of water change when it freezes to ice?

Something about the numbers in this skeleton equation is wrong. What is it? Al + Pb (NO3) 2 ⇨ Al (NO3) 3 + Pb

An electron moved from a higher energy level to a lower energy level. What most likely happened during the transition?

As the average kinetic energy of the particles in a gas increases, which of the following occurs? The temperature of the gas increases. The temperature of the gas decreases. The number of particles increases. The number of particles decreases.

What is the type of strong chemical bond between carbon, hydrogen, and oxygen atoms in a single organic molecule?

0.100 mol of CaCO3 and 0.100 mol CaO are placed in an 10.0 L evacuated container and heated to 385 K. When equilibrium is reached the pressure of CO2 is 0.220 atm. 0.

What is true about the charges of transition metal ions?