Q1W1 Science

Q1W1 Science

Recognizing Useful & Harmful Materials

​

​What I need to know

​Matter has different properties that can be considered in order to minimize

waste.

Everything around us is matter – the soil, water, air. Matter has different properties that make them different from one another.

Some types have properties that make them good materials for producing useful products. Other types have properties that make them harmful.

​What I need to know

Sometimes, matter also undergoes changes that affect its properties.

This module focuses on the different properties of matter that can be classifiedas useful or harmful. This also gives the importance of recognizing the physical and chemical properties of matter in determining the usability of a certain material. After studying this module, you will learn to identify the different properties of matter that can help you determine whether it is harmful or useful.

​Bring Me Game

1 Material from the kitchen

1 material from bedroom

1 school supply

1 item from trashcan

In order to minimize the waste in our household,

we should know which one to keep and which one should be disposed.

​What is it?:

​How do the materials become useful or harmful?

Materials are said to be useful when they serve their purpose. These may have properties such as durability, flexibility, elasticity, hardness, and resistance to water,heat, or acid. Most of the useful materials can be reused and recycled. For example,a container for solid or liquid. When it is already empty, it can still be used for other

purposes such as a flower vase, a coin bank, or a house decor. Whether a bottle ismade of plastic or glass, it has a property that makes it reusable.

​What is it?:

Some useful materials may also bring hazards. For example, a broken glass jar can cause cuts or injury. Toxic substances may also be present in the things you commonly use 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 be careful when handling and using different materials.

Multiple Select

Identify whether the material is useful or harmful. broken glass

• USEFUL

• HARMFUL

Multiple Select

Identify whether the material is useful or harmful.

candy wrappers

• USEFUL

• HARMFUL

Multiple Select

Identify whether the material is useful or harmful. old newspaper

• USEFUL

• HARMFUL

Multiple Select

Identify whether the material is useful or harmful. vegetable peeling

• USEFUL

• HARMFUL

Multiple Select

Identify whether the material is useful or harmful. used syringe

• USEFUL

• HARMFUL

Multiple Select

Identify whether the material is useful or harmful. drained batteries

• USEFUL

• HARMFUL

Multiple Select

Identify whether the material is useful or harmful.

rusted containers/cans

• USEFUL

• HARMFUL

Multiple Select

Identify whether the material is useful or harmful.

candy wrappers

• USEFUL

• HARMFUL

Multiple Select

Identify whether the material is useful or harmful.

empty water bottles

• USEFUL

• HARMFUL

Multiple Select

Identify whether the material is useful or harmful.

food cartons/boxes

• USEFUL

• HARMFUL

Multiple Select

Identify whether the material is useful or harmful.

empty jars

• USEFUL

• HARMFUL

Some waste materials can be safely

disposed of and thrown into a landfill.

A site where waste material are covered with layers of soil so as not to pollute the surrounding land

Open Ended

When is a material considered waste?

Paper, clothing, plant clippings, and food scraps,

are considered as safe materials

Not all waste materials are safe enough to be dumped directly in the landfill.

They become toxic and harmful to living things and the environment.

Multiple Select

Which of these are toxic waste materials?

• food scraps

• used batteries

• rubber tires

• paints

• motor oil

Examples of toxic materials:

• Car batteries

• Motor oil

• Tires

• Liquid waste (e.g., non-dried paint, household cleaners)

• Untreated medical waste

• Cathode ray tube (CRT)

• Screens (tube monitors and TVs)

Multiple Choice

An old newspapers used for wrapping fruits and vegetables are useful or harmful materials?

• useful material

• harmful material

Multiple Choice

The drained batteries are useful or harmful materials?

• useful material

• harmful material

Multiple Choice

The single-use plastic bags thrown in the garden are useful or harmful materials?

• useful material

• harmful material

Multiple Choice

The candy wrappers made into wallets are useful or harmful materials?

• useful material

• harmful material

Multiple Choice

The vegetable peelings made into compost are useful or harmful materials?

• useful material

• harmful material

Multiple Choice

The reused plastic water bottles are useful or harmful materials?

• useful material

• harmful material

Multiple Choice

Not properly disposed empty hair gel container are useful or harmful materials?

• useful material

• harmful material

Multiple Choice

Not properly disposed empty hair gel container are useful or harmful materials?

• useful material

• harmful material

Multiple Choice

Repurpose mayonnaise jars Into pretty craft storage containers are useful or harmful materials?

• useful material

• harmful material

Multiple Choice

The food cartoons scattered around the house are useful or harmful materials?

• useful material

• harmful material