Define chemistry in relation to biology and physics

Do molecules gain or lose energy in evaporation.

How does the kinetic energy of a substance's particles in the gas phase compare to their kinetic energy in the solid phase?

If you mix sodium chloride with cold water will it explode. True or False

What is a delta? how is delta fo rmed?

Given the fictitious chemical equation below 2 cups of tea 1 tablespoon of dry tea + 2 cups of water What is the appropriate stoichiometric factor relating the two "reactants"? Calculate the Molar Ratios From Balanced Equations

When a solution is considered to have a high concentration of hydrogen ions (H+) is also considered to be? a) acidic b) basic c) neutral d) hot

Why does the sky change colors at sunset? 1 because the sun changes colors 2 because the atmosphere reflects colors 3 because long wavelengths are scattered the least 4 because short wavelengths are scattered the least

Consider the reaction N2 (g) + 3 H2 (g) 2 NH3 (g), which is exothermic as written. What would be the effect on the equilibrium position of adding N2 (g) ?

According to Table I, which equation represents a change resulting in the greatest quantity of energy released? 1. 2C (s) + 2H2 (g) - > C2H4 (g) 2. 2C (s) + 3H2 (g) - > C2H6 (g) 3. N2 (g) + 3H2 (g) - >2NH3 (g) 4. N2 (g) + O2 (g) - > 2NO (g)

Calculate the number of liters in 3.25 g of ammonia