Question

H.
ng questions.
1. What is mass?
2. What is matter?
3. What are the three different states of matter?
4. Mention any two qualities of solids with examp
5. What are liquids? Give two qualities of liquids.
6. Name any three qualities of gases. Give some
7. What is change of state of matter?
8. What is evaporation?​

Answer 1

Answer:

1. Mass is both a property of a physical body and a measure of its resistance to acceleration when a net force is applied. An object's mass also determines the strength of its gravitational attraction to other bodies. The basic SI unit of mass is the kilogram
2. matter is anything that has mass and occupaid space
3. three different states of matter are solid liquid and gas
4. A solid has a definite shape and volume.

• A solid has a definite shape and volume.Solids in general have higher density.
• A solid has a definite shape and volume.Solids in general have higher density.In solids, intermolecular forces are strong.
• 5 Liquids have definite volume, but indefinite shape. They are free to form droplets and puddles when they are not inside a container. When a liquid is inside a container, it will take its shape. Unlike gases, a liquid will not change its volume to spread out and completely fill a container.
• 6 Gases have three characteristic properties: (1) they are easy to compress, (2) they expand to fill their containers, and (3) they occupy far more space than the liquids or solids from which they form.
• 7 Changes of state are physical changes in matter. They are reversible changes that do not involve changes in matter's chemical makeup or chemical properties. Common changes of state include melting, freezing, sublimation, deposition, condensation, and vaporization.
• 8 Evaporation is a type of vaporization that occurs on the surface of a liquid as it changes into the gas phase. The surrounding gas must not be saturated with the evaporating substance. When the molecules of the liquid collide, they transfer energy to each other based on how they collide with each other.

Explanation:

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Answer 2

Answer:

1. Mass is the amount of matter or substance that makes up an object.

2. Matter is the stuff that makes up the Universe everything that takes up space and has mass is matter.

3. The three different states of matter is solid, liquid and gas.

8. Evaporation is the process by which water changes from a liquid to gas or vapour.

7. A change of state is physical change in a matter.

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