Last updated on July 6th, 2023 at 08:46 pm
Class 5 Materials and Their Properties
Class 5 materials and their properties questions answered. Learn about different types of matter, their properties and changes in state of matter.
Q: What is material?
Material is the substance or substances of which a thing is made or composed.
Q: What is matter?
Matter is a physical substance which occupies space and has some weight.
Q: What are the properties of matter?
The properties of matter refer to the qualities/attributes that distinguish one sample of matter from another.
Q: What do we observe when we touch objects made of different materials?
Objects made of different materials feel different.
Q: What is solubility?
Solubility describes how well a substance dissolves in another substance, and it is a measure of how easily the substance dissolves in water.
Q: Why do things of the same size have different weights?
Things of the same size have different weights because the material out of which the object is made is packed more densely or closely than others.
Q: What are soluble substances?
Soluble substances are materials that dissolve in water, such as sugar, salt, and milk powder.
Q: What are insoluble substances?
Insoluble substances are materials that do not dissolve in water, such as wood and stone.
Q: What are molecules?
Molecules are tiny particles that make up matter, consisting of a group of atoms bonded together.
Q: Can atoms be seen by the naked eye?
No, atoms are so small that they cannot be seen by the naked eye.
Q: Are the molecules of every substance the same?
No, the molecules of every substance are different from the molecules of any other substance.
Q: What are the three main states of matter?
The three main states of matter are solid, liquid, and gas.
Q: What is a solid?
A solid is a material that retains its shape and volume, and its particles are packed closely together. Particles cannot move freely; they can only vibrate.
Q: Give an example of a solid material.
Examples of solid materials are building, stone, and tin box.
Q: What is a liquid?
A liquid is a material that does not retain its fixed shape, and its matter is made of more loosely packed particles. It will take the shape of its container.
Q: How do particles behave in a liquid?
Particles can move about within a liquid, but they are packed densely enough that volume is maintained.
Q: What is a liquid?
A liquid is a material that can be poured, has flow, takes the shape of its container, takes up space, has weight, and has a fixed volume.
Q: What is a gas?
A gas is a material that has neither a defined shape nor a defined volume, and it assumes the shape and volume of its container. It can flow and expand to fill all the space available to it.
Q: Can a gas be compressed?
Yes, a gas can be compressed. When a gas is compressed, its molecules huddle together and may eventually bond to form a liquid or solid.
Q: How do particles behave in a gaseous state when heated or cooled?
When a sample of matter in the gaseous state is heated, the atoms or molecules gain energy and move more rapidly. When a sample of gaseous matter is cooled, the atoms or molecules lose energy and move more slowly.
Q: What are the conditions that can cause matter to change its form?
Matter can change its form under certain conditions like heating or cooling.
Q: How does heating affect the molecules of a substance?
Heating increases the temperature of a substance, causing its molecules to gain energy and move more rapidly, resulting in a change in state.
Q: What happens to most solids when they are heated?
Most solids melt into a liquid when they are heated, as the heat causes the molecules to absorb energy and become freer, moving apart from one another.
Q: What happens when a liquid is heated?
When a liquid is heated, its temperature rises and molecules absorb heat to become freer and move apart, eventually turning into a gas.
Q: What happens when a liquid is frozen?
When a liquid is frozen, its molecules give up their heat and settle closer together, causing the liquid to become solid and hard.
Q: What are changes in state of matter?
Changes in state of matter refer to the transformation of matter from one state (solid, liquid, or gas) to another due to changes in temperature or pressure.
