2. Use the flow chart to answer the following questions (A-E). A. Which non-water-soluble compound produces bubbles of gas is added? when vinegar B. Which two water-soluble compounds produce bubbles of gas when vinegar is added? C. Carefully examine the chemical formulas of the three compounds you just named above. What anion(s) do these compounds contain? Be sure to include the correct charge on the anion. D. Suppose that you are working with a water-soluble unknown which does not produce a bright pink colored solution when phenolphthalein is added and does not give a solu precipitate when added to 1.0 M NaOH. Based on this result, which of the unknowns might you have? (list all possible identities) E. After getting the results of this NaOH test (no precipitate; part D), which test should you perform next to narrow down the list of possible identities for your unknown? 3. It is very important not to use too much of the unknown compound when carrying out the water-solubility test. Suppose you are working with an unknown that is actually soluble in water: you take a sample of the unknown that is too large (larger than the amount specified in the experimental procedure) and add some water. What do you think will happen?

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States of Matter

The substance that constitutes everything in the universe is known as matter. Matter comprises atoms which in turn are composed of electrons, protons, and neutrons. Different atoms combine together to give rise to molecules that act as a foundation for all kinds of substances. There are five states of matter based on their energies of attraction, namely solid, liquid, gases, plasma, and BEC (Bose-Einstein condensates). 

Chemical Reactions and Equations

When a chemical species is transformed into another chemical species it is said to have undergone a chemical reaction. It consists of breaking existing bonds and forming new bonds by changing the position of electrons. These reactions are best explained using a chemical equation.