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1. Determine the classification of the following matter as compound, element, homogeneous mixture or heterogeneous mixture and explain why for each:
a. Lemonade
b. Sugar completely dissolved in water
c. One M&M candy
d. Tungsten
e. Air

2. The following ions have how many protons and electrons:
a. S2-
b. Cr3+

3. For oxygen reacting with hydrogen, how many hydrogen atoms must react with one oxygen atom in order to fill oxygen's valence shell and what is the formula for this compound between oxygen and hydrogen?

4. If 2 new elements have been discovered and one is R, a new element from the family with 3 valence electrons and Z, a new element from the family with 6 valence electrons. Write the formula for the binary compound between element R and element Z.

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Chemistry, Academics

Category:- Chemistry
Reference No.:- M9393012

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