An Introduction to States of Matter Science Presentation in Beige Light Red Lined Style.pptx

This is intended for grade 5 science subject.

1. Chapter 1 HOW ARE THE PROPERTIES OF MATERIALS USED TO MINIMIZE WASTE?

2. Identify the different characteristics of materials that make it useful, and harmful Learning Outcomes Learn how to segregate waste based on its properties

3. Earth has everything we need to survive. There are also things that can harm us. For example, it has all the food that we eat to get the nutrients and energy in order to live. However, food once rotten can harm and destroy us. This is why it is important to know how to distinguish useful from harmful materials. It can save us from danger and distress. How can you identify if a certain materials is useful or harmful? In this chapter, you will learn more about the properties that can make a material harmful and useful

4. Lesson 1: Recognizing Useful and Harmful Materials

5. You use different materials fro cleaning, cooking, eating and repairing. The usefulness of a certain material depends on its properties. These are materials that are durable and therefore can be reused many times. Though there are some that are not meant to be reused, creative and inventive people still find other ways to used them. Recognizing Useful and Harmful Materials There are also materials that are made for certain purposes only and can be harmful when not used or disposed properly In order to minimize waste in our own household, we have to know which materials are still useful and which ones should already be disposed.

6. Before throwing away any material, you must first check if it can cause harm living things and the environment. Recognizing Useful and Harmful Materials Materials are useful when it serve a purpose. Have properties such as durability, resistance to water, heat, or acid, flexibility, elasticity, and hardness. Some materials can also be reused, take for example, a container for any solid or liquid material. When is a material useful?

7. Before throwing away any material, you must first check if it can cause harm living things and the environment. Recognizing Useful and Harmful Materials Some useful material may also bring hazards. For example: broken glass jar can cause cuts or injury. Toxic substances may also be present in the things you commonly used such as paints, cleaners, fumes, gels or powders. These materials may bring harm to your health, environment, and other organisms when not used properly. That’s why you should take precautionary measures when handling and using different materials. When is a material harmful?

8. Before throwing away any material, you must first check if it can cause harm living things and the environment. Recognizing Useful and Harmful Materials When material already served its primary use and can be discarded, it is considered a waste. Waste can be classified as biodegradable and nonbiodegradable. Biodegradable materials can be decomposed by bacteria or other living things. Examples: fruit peelings, dried leaves, leftover food, paper, etc. Nonbiodegradable materials do not rot easily. Examples: plastic, Styrofoam, cans, glasses, etc. When is a material considered waste?

9. Before throwing away any material, you must first check if it can cause harm living things and the environment. Recognizing Useful and Harmful Materials Waste materials are safely disposed into a landfill . A landfill is a dumping site where waste materials are covered with layers of soil. This is done so as not to pollute the surrounding land. Waste materials thrown in a dumpsite can be safe or harmful. Safe waste materials are not poisonous or toxic. Some of it can be reused or recycled. Example: paper, clothing, plant parts, and food. Paper and clothing can be recycled while plant and food can be decomposed and used as source of organic fertilizer. When is a material considered waste?

10. Before throwing away any material, you must first check if it can cause harm living things and the environment. Recognizing Useful and Harmful Materials Harmful waste materials, cannot be dumped straight into a landfill. These materials can be toxic or harmful to living things when not disposed properly. Examples: batteries, rubber tires, and paint. When is a material considered waste?

11. Classify the different materials found in the word pool below as useful or harmfu l. Write your answers in a similar table below. Quiz Time: Candy wrappers Drained batteries Old newspapers Vegetable scraps Empty shampoo bottle Plastic bags Food cartons Plastic water bottles USEFUL MATERIALS HARMFUL MATERIALS Empty hair gel container Empty mayonnaise jar(glass) Empty disinfectant bottle Empty paint cans Used paint brush Worn out rubber tires

12. MELTING MELTING FREEZING FREEZING solid changes into liquid heat is added liquid changes into a solid heat is removed a block of butter melting a block of butter melting water turning into ice water turning into ice Types of Changes of State

13. Gallium Ga Gallium is a soft, silvery-white metal. It is solid at room temperature but can turn into liquid in your hand. This is because of its low melting point at 85.6°F (29.8°C). Gallium: A Metal That Melts in Your Hand!

14. EVAPORATION EVAPORATION CONDENSATION CONDENSATION liquid changes into gas heat is added gas changes into liquid heat is removed wet clothes drying in the sun wet clothes drying in the sun cloud formation cloud formation Types of Changes of State

15. SUBLIMATION SUBLIMATION DEPOSITION DEPOSITION solid changes directly into gas heat is added gas changes into a solid heat is removed dry ice (solid form of carbon dioxide) dry ice (solid form of carbon dioxide) formation of frost formation of frost Types of Changes of State

16. CHANGE OF STATE CHANGE OF STATE occurs when matter changes from one state to another occurs when matter changes from one state to another TYPES OF CHANGES OF STATE TYPES OF CHANGES OF STATE TYPES OF CHANGES OF STATE freezing melting evaporation condensation sublimation deposition What's That State Again?

17. What Is the Most Interesting Property of Water for You? Explain how this specific property makes life possible on Earth. Find a research buddy and share an answer or two next meeting.

18. Reference CK-12. "Changes of State." Retrieved November 21, 2022 from https://www.ck12.org/chemistry/changes-of-state/lesson/Changes-of-State-MS-PS/?referrer=concept_details

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