Mixtures and Solutions I-check 4 Review

1. A new material forms when two or more materials are mixed, a _______________ happened. Physical Reaction Chemical Reaction Saturation Concentration

2. I know I can put 50 mL of water on one side of the balance and 50 mL of a liquid on the other side to find if the unknown liquid is a solution. What will I see if it is? The unknown liquid will be higher than the water. The balance will be even. The unknown liquid will be lower than the water.

3. I mixed two solids together with 50 mL of water. What evidence would tell me I had a chemical reaction? The solids dissolved Bubbles and fizz The liquid changed color. The solution was saturated.

Different materials can have different solubilities. 4. True or False Different materials can have different solubilities.

5. I make a salt solution. What is the salt? The solute The solvent

6. Dave and Sara each make sugar solutions. 25 g of sugar dissolves in 200 mL of water in Dave’s solution. 15 g of sugar dissolves in 100 mL of water in Sara’s solution. Who made the more concentrated solution? Dave Sara Neither, they are the same

7. A solution of water and material A is clear. A solution of water and material B is also clear. When the two solutions are mixed, a white solid settles to the bottom, leaving a clear liquid. What does the solid tell you? It didn’t dissolve. It’s saturated It’s concentrated A chemical reaction took place

8. Which of the following indicates a chemical reaction took place? Gas bubbles when two liquids are mixed A solid forms when two liquids are mixed A new material is formed when two liquids are mixed All of the above

9. Which of the following is a chemical reaction? A paper being torn into pieces Icing a cake Stretching a rubber band Lighting a match