How could the appearance of a substance change with out it becoming a different substance

Show how the following are formed Beryllium chloride Phosphorous pentachloride Boron dichloride Methane Carbon tetrachloride

Which statement best describes what makes a base weak? A base is weak when it forms few ions in water. A base is weak when only a little of it is dissolved in water. A base is weak when its concentration is high.

Select all the correct answers. Which of these statements are true about scientific theories and laws? Theories are untested. Laws are untested. Laws are often expressed as math formulas. A law is the same as a theory. Theories are not opinions.

Which statement describes an arrhenius acid? it produces OH - in a solution it produces H + in solution it accepts protons it donates protons it donates electrons

Water decomposes into hydrogen and oxygen when an electric current is applied. How many grams of water must decompose to produce 2 grams of hydrogen and 16 grams of oxygen?

Why is galvanized steel preferred for outdoor uses?

Which of the following factors renders a species more susceptible to disease and infertility?

What kind of intermolecular forces act between a hydrogen iodide molecule and a chlorine monofluoride molecule?

Nonpolar materials have separated positive and negative areas. True False

Name the 12 elements in the periodic table