DISCLAIMER This Presentation may contain Copyrighted Material, DO NOT DISTRIBUTE

Nature of Matter Tiffaney Mathis Adrian Defante

Objectives Determines that the properties of materials (e.g. density and volume) can be compared and measured (e.g., rulers, balances, and thermometers) (Standard 1, Strand 1) Third Determines the physical properties of matter using metric measurements that incorporate tools such as rulers, thermometers, and balances Fourth Uses a variety of measurements to compare and contrast the physical properties of matter Fifth Uses metric tools to determine the density and volume of materials

Vocabulary Mass – Weight – Volume – Density – Solubility – amount of matter in a object Measure of the pull of gravity on an object amount of space an object takes up concentration of matter in an object Substances ability to dissolve Experiment Time !!!

How do I measure these physical Properties Mass Volume

Density = Mass/Volume Two sets of experiment to find density –Direct –Indirect Engineering more/less dense materials –Lets think…. Is Density related to the size of an object ? What determines how dense something is ? Lets predict using MATH

Engineered Materials Styrofoam D =.1 g/cm^3 Glass D = 2.4 g/cm^3 Steel D = 7.85 g/cm^3

Density of Liquids Purpose : To identify the density of known liquids Materials Spoon 2 Large Vials with Caps Water, Isopropyl Alcohol, Dishwashing Liquid, and Cooking Oil Procedure 1.Add 2 teaspoons of each liquid to each of the two vials. Note the different layers of liquids. 2.Invert one of the vials so the liquids mix 3.Compare the two vials and ask questions

Density of Liquids Questions Before each addition of liquid in the procedure, ask the students what they think will happen once the liquid is added. Which liquid is the most dense? Which liquids is the least dense? Did any chemical or physical changes occur? Was there a color change? ETC…..

Physical Change Experiment Purpose: Demonstrate the physical properties of any round shaped fruit Materials Round Fruit of reasonable size from students Balance Scale String Rulers Larger Beaker with measuring marks

Physical Change Experiment Procedure 1. Allow each student to weigh the fruit with a scale and balance Record data. 2. Have students measure the circumference of the fruit with a string and ruler then record. 3. Indirect Experimentation: From this data we will calculate volume, mass, and density. 4. Direct Experimentation: Have students place the object in water and measure the changed volume to find the density.

Density of a Solid Purpose: Measure the density of a cut piece of fruit. Does the density change? Materials Fruit, Balance, Scale, Large Beaker w/ marks, knife, and small plastic containers w/lids Procedure a.Take a few slices of fruit and place in container. Weigh on a scale. Record the mass b.Place the container in a measured volume of water and record the displacement. Record water displacement. c.Calculate the density of the orange slice ( D = mass/volume) d. Repeat, but fill container with sliced fruit and compare results.

Concepts Enforced Compares/contrasts physical properties of matter Incorporates tools: rulers and balances D = mass/volume Compare/contrasts densities of different liquids and solids Utilizes metric system