Grouping Different Materials Based on their Properties

Grouping Materials based on their Properties

Open Ended

You spilled a glass-full of water on the floor of your classroom. The problem is: the mop is missing and there are no cloth towels to use. What will you do to clean the mess?

The material that makes up the observable universe.

Matter and energy cause all of the things that happen in the universe.

Small particles form protons, and together with electrons, they form atoms.

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​Matter

Open Ended

What do you think would happen if you invent a machine that can turn anything into gold?

They are the characteristics which are observed to group different materials.

Some characteristics are: ability to absorb, to sink or float, and the ability to decay.​

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​Properties of Matter

Poll

Which should we use to clean a very large spill?

Absorption - the ability of a material to absorb or take in another material gradually.

They are called absorbent materials.

Materials that cannot take in liquids are called nonabsorbent​ materials.

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​Ability to Absorb

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​​absorbent materials

​​nonabsorbent materials

Multiple Choice

Which material is nonabsorbent?

• cotton

• towel

• plastic

• sponge

Open Ended

How do fabrics absorb liquids?

Open Ended

Raincoats, umbrellas, and boots keep us dry from the rain, but what if ALL of your clothes are nonabsorbent? Write one sentence about what would happen.

Por means hole.

Porous materials have tiny pockets of air.

This means that they can hold and retain liquids.

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​Porosity

Absorbent materials need to be stored in a clean, dry area.

Cloths should be folded before being placed in a cabinet.

Rugs must be washed and separated from clothes.

Sponges must be wrung-out and disinfected.​

Corks must be kept away from chemicals.​

Loofahs must be dried in an open area.​

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​Storage​

Multiple Choice

Why should we wring out our kitchen sponge after using? Choose the best answer.

• So that it can have bigger holes.

• So that the soap can clean it too.

• So that it will not stink.