The phase change in which a substance changes from a solid to a liquid is

a. freezing.

b. melting.

c. sublimation.

d. condensation.

An ionic bond would most likely form between atoms of which of these pairs? A. oxygen and oxygen B. magnesium and oxygen C. magnesium and magnesium

Why is second ionization energy larger than first ionization energy

The energy from radiation can be used to cause the rupture of chemical bonds. A minimum energy of 242 kJ/mol is required to break the chlorine-chlorine bond in Cl2.

Why do most items puffed with nitrogen?

in the reaction a + b - > c the following information applies. at the beginning of the reaction there was 1.0 mol of chemical a and 0.5 mol of chemical c was recovered.

Two children are playing tag. Child A who is doing the chasing can run 100m in 24 seconds Child B is running away from child A and can run 64m in 21 seconds.

What ion does a base increase

What is the definition of Amplitude?

An excess of NiCO3, 12 g, was added to 40cm cube of sulpheric acid, 2.0 mol/dm cube. The unreacted nickel carbonate was filtered out and the filtrate evaporated to optain the crystals.

Under what condition is decompostion the fastest? Under what condition is it the slowest?