Recycling Chemistry. Task 1 Pre-Reading Activity. Think of some materials that can be recycled and list them. Task 2 Reading Activity

Transcription

1 Chemistry Gr10 Name: Class: Date: Recycling Chemistry Task 1 Pre-Reading Activity Think of some materials that can be recycled and list them. Task 2 Reading Activity Page 1 of 7 Recycling is a process in which new items are made from products that have been used before. Materials are collected, separated, and then treated based on their physical or chemical properties. The recycled material can be used to make more of the same or

2 different items. What do you do with the aluminum soda can or the plastic juice bottle when you finish drinking from it? Do you place it in the trash, or put it in a recycling container? Putting it in a recycling container is the best choice because it saves our resources and conserves energy. Metals are separated by type, such as iron/steel, aluminum, copper, lead, and zinc. They are separated because each kind of metal is used to make different products, and they melt at very different temperatures. Iron/steel and aluminum are the most recycled metals because they are widely used to make food cans like those for vegetables and some drinks. Digging the ore out of the ground and making brand new cans and products costs much more than it does to recycle what we have now. Did you know that you can power a television for three hours using the energy you save when you recycle one aluminum can?! We waste energy by throwing away materials that we can reuse or recycle instead. Things we throw away often go to a landfill, a large area of land in your community reserved just for trash, where they will sit for a very long time. Recycling can seem like extra work compared to just tossing your cans and bottles and papers into the trash. Whenever possible, buy products that are made from recycled materials. Look for the recycle symbol on the item when you are buying products. After a little bit of practice, reusing and recycling will become a habit. And with every item you reuse or recycle, you help make Earth a better place! Key Vocabulary reuse recycle metals aluminum Iron / steel copper lead zinc A. Look at the items listed and pictured below. A few examples have been given for how they can be reused. List at least one more way that you could reuse each item instead of putting it in the trash. Page 2 of 7

3 vase collect coins watering can packet Trash can liner Make a swing Filled with colored stand and used as a doorstop Reused as B. Fill in the blanks with the right R words given below. Reuse, Recycle, Reduce Page 3 of 7

4 1. To collect unwanted materials and process them to make new materials : 2. To limit the amount thrown away by buying items that can be used more than once, making your own things and choosing items with less packaging : 3. To find a new way to use something again : C. Complete the following sentences after reading the passage. 1. Recycling is a process in which are made from products that have been used before. 2. Materials are collected, separated, and then treated based on their or properties. 3. Things we throw away often go to a a large area of land in your community reserved just for trash, where they will sit for a very long time. 4. and are the most recycled metals because they are widely used to make food cans like those for vegetables and some drinks. 5. Putting materials in a recycling container is the best choice because it saves our and. D. Reorder the following sentences that describe the process of recycling From the recycling centre they go to factories to be made into new, recycled things. Page 4 of 7

5 At home you put things like cans, plastic bottles and paper in your recycling bin. You can buy the recycled things in the shops. The materials are taken to a recycling centre. Recycled cans, plastic bottles and paper can be recycled over and over again. The box or bin is emptied. The new cans, bottles and paper go to shops. Page 5 of 7

6 E. Here is a picture graph of some recyclable items, create a column graph so that it is easy to see the relative number of items. Each picture symbol = 10 items Page 6 of 7

7 Task 3 Post Reading Activity 1. Where do metals come from? 2. What metal is usually used to make drinks cans? 3. Where do you put your cans so they can be recycled? 4. What are drinks cans recycled into? 5. Why is recycling cans and tins a good thing to do? Page 7 of 7