أسئلة عن حالات المادة والحركة البراونية

What are the basic states of matter studied?

• Solid and liquid only

• Solid, liquid, and gas

• Gas and plasma only

• Liquid and gas only

When was Brownian motion discovered?

• In 1927

• In 1725

• In 1827

• In 1925

What is the reason for the difficulty in breaking a piece of rock?

• Weak attractive forces between particles

• Large distances between particles

• Strong attractive forces and small interparticle distances

• No bonds between particles

What is the state of plasma?

• Liquid state of matter

• A mixture of positive ions and negative electrons

• Solid state of matter

• Ordinary gaseous state of matter

Why does table salt dissolve in water?

• Strong attractive forces between water particles

• Very small interparticle distances

• Weak attractive forces and relatively large interparticle distances

• No interparticle distances

What is the temperature required to form plasma?

• Room temperature

• Hundreds of degrees

• Tens of degrees

• Thousands or millions of degrees

Where can plasma be observed in nature?

• In oceans

• In soil

• In ordinary air

• In the sun, lightning, and auroras

How is plasma used in air conditioning?

• To heat the air only

• To cool the air only

• To purify the air and break down pollutants

• To increase the humidity of the air

What is the definition of Brownian motion?

• Regular movement in one direction

• Random movement in a specific direction

• Random movement in all directions

• Stable movement without change

Why does the wick of a candle spread in the air?

• Strong attractive forces between air particles

• Very small interparticle distances

• No interparticle distances

• Weak attractive forces and very large interparticle distances