Starter

• Directions: Copy the following word problem. Underline the physical properties in the word problem. Circle the element. Use a KWFL chart to calculate the problem.

A cube of copper has a mass of 45 grams and takes up a volume of 7 cm3. What is the density of the cube of copper?

Phase Changes and Solutions

Day 51

Essential Question

• What are the phase changes of water?

Learning Target

• I can identify phase changes on a heating curve.

• I can identify types of solutions.

Explain: Physical or Chemical Property

Directions: On the left-side, Copy the following and identify each as a physical or chemical property:1.Purple gas2.Sodium reacts with water in the air3.Phosphorus burns in air4.Freezing point 100 K5.Brown solid6.Boiling point 59°C

Explain: Physical or Chemical Change

Directions: On the left-side, Copy the following and identify each as a physical or chemical change:1.Making flooring from a tree2.Digesting food3.A car engine running4.Mixing vinegar and baking soda5.Melting iron6.Making a horseshoe from a steel bar

Teacher Explanation and Student Draws the Phase changing Diagram on the Right.

Gas

Solid

ExplainDirections: Label the following intervals of the graph. With one of the following terms: gas, solid, liquid, liquid to gas, solid to liquid, ice, steam, melting, evaporating.1. A-B=2. B-C=3. C-D=4. D-E=5. E-F=

Engage: Solute or Solvent

Direction: Which one is the solute (smallest) or solvent (largest).1.Salt water= salt(solute) water(solvent)2.Sugar water=3.A solution of 20% HCl and 80% water=4.Chocolate water=5.Rubbing Alcohol: 60% alcohol and 40% water=

Explain: Soluble and Insoluble

Directions: Which one is soluble or insoluble in water?1.Cooking Oil2.Sugar3.Soup4.Dirt5.Salt

Explore: Demonstration• Who Am I? Saturated, Unsaturated, SupersaturatedDirections: On the left-side, copy the following questions. Answer the

questions during the demonstration and after the demo.

Analysis Questions:1. What is the solute (salt or water)?2. What is the solvent (salt or water)?3. Which Beaker the cooler one or the warmer one dissolved the salt the

longest?4. Which Beaker turned into a saturated solution first? Why?5. How does temperature affect dissolving a solid in water?6. What is unsaturated solution?7. What is saturated solution?8. What is supersaturated solution?

Explore: Dissolving SugarDissolving Sugar

Directions: 1. Cut-out the following boxes.2. Place the following beakers in order from fastest dissolving to slowest dissolving (using tape on one sheet of paper). Remember, temperature has an effect on dissolving a solute in a solvent.3. Label one of the solutions saturated, unsaturated, and supersaturated

Elaborate: Mind Map

• Write a paragraph about any of the following terms: Mixtures, Element and Compound, Solutions using your notes.

• Include in your paragraph the vocabulary words and their definitions, facts, and examples. Remember your paragraph cannot have less than seven sentences.

• READ: I will read these and they will be a Quiz grade.