Activity 14: Physical and Chemical Properties and Materials• Warm up: What is the difference between matter and

mass?• What about weight?

Next Quiz

• Our first quiz from this unit is on Thursday!• It is open notebook; make sure your

notebook is up to date and complete, especially if you have been absent.

Conservation of Matter Questions

1. The balloon was sucked into the flask over time.2. The weight of the system stayed the same throughout

the reaction.3. This experiment demonstrate the conservation of matter

because it shows that matter is not created or destroyed even through a chemical reaction.

Activity 13 Analysis Questions

1. Plastic- raw materials are petroleum and natural gas; end of life options are landfill or recycle some. Aluminum- raw materials are bauxite and sodium phosphate solution; end of life options are recycle or landfill.

2. A. A need for more raw materials, more energy to gather raw materials, more energy needed to manufacture the material and containers, more waste produced in manufacturing, more containers sitting in landfills.

2. b. no materials to make the product, no waste produced from manufacturing, companies need to find other materials to make the containers, need to rely on recycled materials, no more containers added to landfills.

Activity 13 Analysis Questions

2. c. Less raw materials needed from the earth, less waste produced.3. In each scenario, the life-cycle diagram helps the person see the steps that go into the entire life of the product which in turn helps when making an informed decision.4. Reducing the amount of raw materials needed at each stage. Reducing the amount of materials needed as inputs in the manufacturing stage, reducing the amount of waste produced at each stage. Increasing the amount of materials that are recycled to decrease the volume of raw materials needed at the manufacturing stage. Accept any suggestion that would reduce energy and resources as inputs and reduce the amounts of waste as outputs.

Activity 13 In Case You Missed It...

• Diagrams and models can be helpful in explaining and understanding scientific concepts.

• Raw materials- substances that come from earth and are used to manufacture a product.

• Life cycle- what is needed to make the container, how it will be made, and what will happen when it can no longer be used.

Activity 13 In Case You Missed It ...

• The four stages of a life cycle diagram are raw materials, manufacturing, useful life, and end of life.

Activity 14: Physical and Chemical Properties and Materials

• Please open your books to page B14.

• What is the difference between physical and chemical properties?

• Student sheet for Activity 14 in OneNote.

Activity 14: Physical and Chemical Properties and Materials• There are fragile materials

in your bin! BE CAREFUL!• Things in your bin:– Aluminum (thinner)– Carbon– Copper– Glass – Granite

– Iron (thicker)– Limestone– Formica– Polystyrene plastic– Tile– Wood

Activity 14: Physical and Chemical Properties and Materials• You will be testing both physical and chemical properties.• Procedure is on the lab desks, you only need on computer

for your group.• Record the results in OneNote.

Cool Down: Phase Changes

• What are phase changes? Give some examples.

Cool Down: Phases ChangesSolid

Liquid

Gas

Tonight’s Homework

• Complete Activity 14 analysis questions for homework!