Which of the following phase changes involves a decrease in entropy?

vaporization of liquid mercury

solid metal melting to form a liquid

condensation of water vapor to form dew

sublimation of dry ice into carbon dioxide gas

Is glass soluble in water? Explain.

Explain the process of separating a mixture consisting of iron fillings and sand in a plastic bowl.

Which bond other than the c-c bond is the least polar in the molecule?

Why is water an effective solvent for many different types of compounds?

Two of the main dangers for the icebreaker ship Polarstern during their year-long stay in the frozen Arctic ocean are 1) the ship being crushed by the frozen ice and 2) polar bears. True False

A sample of gas in a balloon has an initial temperature of 21 ∘C and a volume of 1310 L. If the temperature changes to 70 ∘C, and there is no change of pressure or amount of gas, what is the new volume, V2, of the gas?

Which is a waste product of aerobic respiration? A. water B. energy C. oxygen D. glucose

Match the following: Part A 1. matter with no definite shape or volume 2. matter with no definite shape but with definite volume 3. the process of a solid changing directly to a gas without forming a liquid 4.

What is the mass in grams of 390 mL

Around 1910, Rutherford bombarded gold foil with alpha particles. Most of the alpha particles passed straight through. To his surprise, a smaller number were deflected by 180°. This summary recounts the scientific discovery of A.