Material Classification Quiz

Study Notes

Students can observe objects around them and categorize them based on different properties.
Ghulan brought a new notebook and a pen, while Sheeta brought a new notebook to school.
These objects are made from different materials.

The process of classifying objects based on shared properties is called classification.
Objects can be grouped based on their shape, color, hardness, softness, shine, dullness, or the material they are made of.
For example, a ball can be made from various materials, and some materials can be used for multiple objects.

Materials can be distinguished by their appearance: wood looks different from iron, which looks different from copper or aluminum.
Some materials share similarities, which differentiate them from others. For instance, iron, copper, and aluminum are different from wood.
Materials can be categorized by sheen, texture, color, and other noticeable features.
Lustrous materials have a shiny surface. Examples include iron, copper, zinc, gold, and aluminum.
Non-Lustrous materials lack a shiny surface; examples include paper, wood, rubber, and jute.

Materials can be categorized based on their ability to compress, with some being easier to compress than others.
Hard materials resist compression. Examples include stones.
Soft materials compress easily. Examples include erasers.
Hard materials can scratch soft materials. For example, a metal key can scratch wood, aluminum, stone, iron, candle, chalk, etc.

Materials can be categorized based on their transparency – whether or not light can pass through them.
Transparent objects allow light to pass through them completely, revealing a clear view of what's on the other side. Examples include glass, water, air, and cellophane paper.
Opaque materials block light entirely, preventing one from seeing through them. Examples include wood, cardboard, and metals.
Translucent materials allow some light to pass through, but not enough to see clearly through them. Examples include butter paper and frosted glass.

Some materials dissolve completely in water, these are called soluble. Examples include sugar and salt.
Some materials do not dissolve in water, these are called insoluble. Examples include chalk powder, sand, and sawdust.

All materials have mass and volume.
Matter is anything that occupies space and has mass.
Mass is the amount of matter an object contains and is measured in grams (g) and kilograms (kg).
Volume is the space occupied by matter and is measured in liters (L) and milliliters (mL).
The SI System of Units is used to represent the units of mass, volume, and other quantities.
Kilogram is abbreviated as kg.
Liter is abbreviated as L, and milliliter as mL.
Cubic meter is abbreviated as m³.
Always leave a space between the numerical value and the unit.