Presentation on theme: "Carolina kit #251200 $149.95 refill #251250 $59.95 Deb Semmler UNDERSTANDING PROPERTIES OF MATTER."— Presentation transcript:
Carolina kit #251200 $149.95 refill #251250 $59.95 Deb Semmler UNDERSTANDING PROPERTIES OF MATTER
Inquiries in Science Determining Properties in Matter
Learning Goals Investigate intensive and extensive properties Explore differences between chemical and physical changes Develop skills to design and perform experiments
Materials Included in Kit: enough for 30 students- 10 groups of 3 0.1 M silver nitrate Copper shot 0.5 M copper sulfate solution Connecting wires w/ alligator clips Aluminum evaporating dishes Iron filings 5 magnets Mossy zinc Sand Sodium bicarbonate Acetic acid (vinegar) Chalk Hydrochloric acid Dry yeast Hydrogen peroxide Aluminum foil Brass washers Steel bolts Granite chips 10 mini-lightbulbs 5 lightbulb holders 5 battery holders Pipets Filter paper Metal strip sets Metal cylinder sets Properties of matter cards
Needed, but not supplied Salt (~ 100 g) Sugar (~ 100g) Black, water-soluble markers (10) Water Iron nails Mortar and petsles (10) Test tubes w/ racks (50) Balances (5) Rulers (10) Graduated cylinders (100/1,000 mL) Scoops and teaspoons Stirring rods D-cell batteries (5) Safety goggles, aprons, gloves
ACTIVITY 1 6 groups/5 students 1.Students collect the materials. 2.Review the Properties of Matter cards as a group to familiarize themselves with the materials. 3.Brainstorm together and come up with a logical system of organizing the materials using the information on the cards, the physical characteristics of the materials and any other means they can think of to group the materials. Properties of Matter Study Cards Copper shot Iron filings Sand/salt mixture 250 mL beaker of water 250 mL beaker of saltwater Sugar Salt Granite chips Brass washer Steel bolt Aluminum foil Empty beaker (represents air)
Activity 2 same 6 groups of 5 Students select five materials from the list and determine the following eight properties for each: Mass Volume Density Magnetism Appearance( color, texture, features, etc) Reactivity with acid State at room temperature Conductivity They record their results in a Properties of Matter Data Table Uses the same materials as activity 1. Copper shot Iron filings Sand/salt mixture 250 mL beaker of water 250 mL beaker of saltwater Sugar Salt Granite chips Brass washer Steel bolt Aluminum foil Empty beaker (represents air)
ACTIVITY 3 10 groups of 3 Students will individually conduct the following experiments, filling out the data table and deciding whether it represented a chemical or physical change. Yeast and hydrogen peroxide Filter paper and marker Silver nitrate and copper Sugar and water solution Sodium bicarbonate and acetic acid Zinc and hydrochloric acid Chalk Iron and copper sulfate ½ scoop of yeast in an evaporating dish Black marker Filter paper 2- 250 mL beakers filled w/ 150 mL of water 5 copper shot in test tube or evaporating dish Scoop of sugar in evaporating dish Stirring rod ½ scoop of sodium bicarbonate in evaporating dish 1 or 2 pieces of mossy zinc Piece of chalk ½ scoop of iron filing in test tube or evaporating dish Ruler Mortar and pestle
1. yeast and hydrogen peroxide- add 5 drops of hydrogen peroxide to the yeast in the evaporating dish. Record observations. 2. filter paper and marker- using a black marker, make a black line 3 cm from the bottom of the filter paper. Fold the paper so that it will fit into a beaker with 150 mL of water, keeping the line above the water mark. Allow water to filter through the paper until it is 1 cm from the top. Remove the paper, allow it to air dry and record observations and results. 3. silver nitrate and copper- put copper into a test tube and add 1 mL of silver nitrate to it. Observe and record the results. 4. sugar and water solution- note the properties of sugar and water separately. Pour the water into the sugar and mix. Observe and record the results. 5. sodium bicarbonate and acetic acid- add 5 drops of acetic acid (vinegar) into the evaporating dish containing the sodium bicarbonate. Observe and record the results. 6. zinc and hydrochloric acid- add 5 drops of hydrochloric acid to the evaporating dish containing the zinc pieces. Observe and record the results. 7. Chalk – place chalk in the mortar. Using the pestle, grind the chalk thoroughly. Observe and record the result. 8. Iron and copper sulfate- add 1 mL of copper sulfate solution to the evaporating dish containing the iron filings. Wait for 3 to 5 minutes noting any changes that you observe during that time. Observe and record the results.
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