K- C 12 H 22 O 11 (s) L- C (s) X X M- O 2 (s) X X N- H(s) X X O- O 2 & H 2

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1 Compounds Mixtures Oh My! Place a Check in the appropriate box if it applies to each substance observed. Separation Substance Compound Mixture Element Homogeneous or Heterogeneous Physical or Chemical A- NaCl (s) X X B- NaCl (aq) C- NaCl (s) X X D- CuSO 4 (s) X X E- CuSO 4 (aq) F- CuSO 4 (s) X X G- S(s) sulfur X X H- Fe(s) iron X X I- S & Fe J- Coke Water H 2 O(l) X X K- C 12 H 22 O 11 (s) L- C (s) X X M- O 2 (s) X X N- H(s) X X O- O 2 & H 2 Based on the chart above list the differences between Compounds and Mixtures Compounds/Elements Mixtures

2 Please read as a group in order and answer questions where emphasized in BOLD print by placing a check in appropriate places on your individual table. Table 1- NaCL 1. Substance A is Common Table Salt. It is classified as a compound or mixture or element. 2. Substance B is Common Table Salt dissolved with water. It is classified as a compound or mixture or element. 3. Substance C is what is left after the water is boiled off. Substance C is classified as a compound or mixture or element. Substance C is the same substance as Substance A 4. For Substance B, mark in your table whether it was separated by a physical or chemical means in order to obtain substance C. If I am getting back the same substance that I started with was the separation a physical or chemical change? Physical or chemical change? NaCl(aq) Water boiled off NaCl(s) Substance C NaCl(s) Substance A H 2 O (l)

3 Please read as a group in order and answer questions where emphasized in BOLD print by placing a check in appropriate places on your individual table. Table 2 CuSo 4 1. Substance D is Copper Sulfate. It is classified as a compound or mixture or element. 2. Substance E is Copper Sulfate dissolved with Water. It is classified as a compound or mixture or element. 3. For Substance E, CuSO 4 (aq), mark in your table whether it was separated by a physical or chemical means in order to obtain substance F, which is the same as substance E, CuSO 4 (s). The water in substance E was boiled off. 4. Substance F is what is left after the water is boiled off. Substance F is classified as a compound or mixture or element. Physical or chemical change? CuSO 4 (aq) Water boiled off CuSO 4 (s) Substance F CuSO 4 (s) H 2 O(l) Substance D

4 Please read as a group in order and answer questions where emphasized in BOLD print by placing a check in appropriate places on your individual table. Table 3 S & Fe 1. Substance G is Sulfur (S) and it is best classified as a compound or mixture or element. 2. Substance H is Iron (Fe) classified as a compound or mixture or element. 3. Substance I is Sulfur and Iron together and it is classified as a compound or mixture or element. 4. For Substance I, was the iron (Fe) separated from the sulfur (S) by the magnet a physical or chemical change. Chemical or Physical separation? Please read as a group in order and answer questions where emphasized in BOLD print by placing a check in appropriate places on your individual table.

5 Table 4 - Coke Station distillation of water from Coke 1. Substance J is Coke and it has no chemical formula. This substance is made up of sugar, carmel color, carbon dioxide, and water. Is Coke a compound or mixture or element. Would you classify Coke, substance J, as homogeneous or heterogeneous. 2. The clear substance being collected in the smaller flask appears to be one of the ingedients that made up substance J. This represents substance water. This substance is classified as a compound or mixture or element. Would you classify water as homogeneous or heterogeneous. 3. For substance J, mark whether water is separated from Coke by physical or chemical means. Chemical or Physical separation? Water boiled off Please read as a group in order and answer questions where emphasized in BOLD print by placing a check in appropriate places on your individual table.

6 Table 5 - foom hood 1. Substance K (sugar) is classified as a compound or mixture or element. 2. Substance L is released or formed when substance K reacted in the following reaction: H 2 SO 4 C 12 H 22 O 11 (s) 11 H 2 O(g) + 12C (s) + Heat Substance K Substance L 3. Would you say that substance L is a compound or mixture or element. Would you say that substance L is homogeneous or heterogeneous. 4. For Substance K (sugar), mark whether it was separated by a physical or chemical change to form substance L, carbon (C). Chemical or Physical separation? C 12 H 22 O 11 (s) Sucrose disaccharide C (s) carbon Glucose + Fructose = Sucrose = Table Sugar Please read as a group in order and answer questions where emphasized in BOLD print by placing a check in appropriate places on your individual table.

7 Table 6 Molecular Model Station 1. Remember a Yellow ball represents Hydrogen atoms and Green Balls represent Oxygen. Wooden sticks between atoms represent chemical bonds. 2. Would you say that substance M is compound or mixture or element. Would you say that substance M is homogeneous or heterogeneous. 3. Would you say that substance N is compound or mixture or element. Would you say that substance N is homogeneous or heterogeneous. 4. Would you say that substance O is compound or mixture or element. Would you say that substance O is homogeneous or heterogeneous. 5. If I asked you to separate substance M from substance N in the third beaker would it require pulling atoms apart from wooden sticks or simply physically moving molecules apart from one another? 6. For substance O, mark whether the separation of substance M from N in the third beaker was a physical or chemical change. Sorry no diagram!

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