POST-LAB EXERCISES 1. Classify as element or a compound. a. sodium, Na b. Magnes

Question

POST-LAB EXERCISES 1. Classify as element or a compound. a. sodium, Na b. Magnesium chloride, MgCl c. nitrogen, N d. carbon dioxide, CO e. copper (I) nitrate, CuNO 2. Classify as a homogeneous mixture or a heterogeneous mixture. .egg b. coffee c. stainless steel d. rubber band e. pizza 3. Are the following soluble or insoluble? a. Olive oil is mixed with balsamic vinegar to form a salad dressing b. Sugar is dissolved in water to make a simple syrup c. A sample of swamp water contains water and dirt.

Explanation / Answer

(1)Classification as elements and compounds-

a. Sodium Na - element (sodium is the element of periodic table)

b.Magnesium chloride - Compound ( Which is the composition of magnesium and chlorine)

c.Nitrogen N2 . - Element

   d.Carbondioxide - compund (which is composed by carbon and oxgen

   e.Copper Nitrate - compound

(2) Classification as homogeneous mixture and heterogeneous mixture

a. Egg- homogeneous mixture

b.Coffee- Heterogeneous mixture

c.stainless steel-homogeneous mixture

d.Rubber band-homogeneous mixture

e.pizza- Heterogeneous mixture

(3) Soluble or insoluble

a.soluble

b.soluble

c.insoluble

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