Unit 2, Day 7

Bellringer

Journal Entries – Unit 2, Day 7 Date Entry Page Number Melting Point, Boiling Point, and Solubility Notes RIGHT SIDE Unit 2 - Day 7 Physical Properties Mini Lab LEFT SIDE

Benchmark: SC.8.P.8.4 Objectives: Today you will be able to: Classify and compare substances on the basis of their solubility, melting and boiling points. Explain that these properties are independent of the amount of the sample.

-Solvent -Saturated -Unsaturated Important Vocabulary -Supersaturated -Physical Property -Solubility -Melting Point -Boiling Point -Solute -Solvent -Saturated -Unsaturated -Supersaturated Use word wall strategy or another vocabulary strategy identified by your department or Instructional Coach.

1. A property that can be observed or measured; a characteristic. Physical Property Physical Property 1. A property that can be observed or measured; a characteristic. Volume Magnetism Density Odor Mass

2. Physical Properties help scientists classify matter To arrange into groups Yellow Orange Soft Hard Previously classified materials

Physical Properties of Matter Melting Point Boiling Point Solubility

The melting point varies depending on the substance 3. The temperature at which a substance changes from a solid to a liquid. The melting point varies depending on the substance

Physical Properties of Matter Melting Point Boiling Point Solubility

The boiling point varies depending on the substance 4. The temperature at which a substance changes from a liquid to a gas. The boiling point varies depending on the substance 100o C Boiling Point of Water

Melting / Boiling Point Activity http://www.harcourtschool.com/activity/hotplate/ How could an objects melting point and boiling point help a scientist figure out what substance they have?

Physical Properties of Matter Melting Point Boiling Point Solubility

What is solubility? 5. Solubility = how easily a solute dissolves in the solvent to form a solution or a homogeneous mixture. Solubility is a physical property of matter

What is a saturated solution?

Saturation Cannot fit any more (any extra solute added would sink to the bottom) 6. Saturated: when a solution contains the maximum solute it can hold.

Rate of Melting, Boiling, and Solubility Mini-Lab 1. Send up one lab representative to receive materials. 2. Put your name and date on the top of your paper. 3. Remember to follow step by step instructions for class points!

Exit Slip 1. What is the difference between a solute and a solvent. 2. When a solution has as much solute as it can hold we call this ________________. 3. When a solution has less solute than it can hold we call this _________________. 4. Does the size of the sample affect its melting point or boiling point? 5. Why are melting point, boiling point, and solubility physical properties? Use this slide or create your own Exit Slip for your students and review answers.

FCAT Challenge Question SC.8.P.8.4 – Boiling Point 1. Stephanie is given an unknown liquid to test in the laboratory. She thinks this liquid might be alcohol. Which physical property would be the most helpful for Stephanie to determine the identity of the liquid? A. Its color B. Its mass C. Its boiling point D. Its volume

FCAT Challenge Question SC.8.P.8.4 – Boiling Point 1. Stephanie is given an unknown liquid to test in the laboratory. She thinks this liquid might be alcohol. Which physical property would be the most helpful for Stephanie to determine the identity of the liquid? A. Its color B. Its mass C. Its boiling point D. Its volume