Which is an example of a chemical change?

mixing of poster colors

formation of clouds

metal corroding in salt water

sugar dissolving in water

separating salt from seawater

Which properties describe water? strong surface tension, weak surface tension, denser as a solid, denser as a liquid, nonpolar, polar, covalent bonds, or ionic bonds

What are the physical properties of liquid bleach

A plant grows three inches in a month. Why is this a physical change?

Which of the following elements in the periodic table have nonmetallic properties

A gas occupies 100.0mL at a pressure of 780 mm hg. What is the volume of the gas when its pressure is increased to 880 mm hg

How many moles of neon (Ne, 20.179 g/mol) are in 68.4 grams of neon

A 50.00 mL sample of groundwater is titrated with 0.0300 M EDTA. Of 12.40 mL of EDTA is required to titrate the 50.00 mL sample, what is the hardness of the groundwater in molarity and in parts per million of CaCO 3 by mass

Why openness is important to the progress of science?

At a certain temperature the rate of this reaction is second order in NH4OH with a rate constant of 34.1 M^-1s^-1: Suppose a vessel contains NH4OH at a concentration of 0.100M.

If you go into the lab and dissolve 2.11 g of magnesium chloride in enough water to make 1500 ml of solution, what is the molarity of the resulting solution?