What is the basic unit of matter?

Any sample of matter has mass and takes up space. The main reason for this is because:

Which one of the following is not a general state of matter?

Which of the following will exhibit diffusion?

• Salt and sand are solids.
• Hydrogen and oxygen are gases.

What is the boiling point of water?

Which one of the following has the strongest interparticle spaces between the particle?

What is meant by dry ice?

• It's called "dry ice" because it does not melt like wet ice.
• Instead, dry ice converts into carbon dioxide gas (sublimation).

When you heat a sample of gas, what happens to the particles that make up the gas?

Evaporation of a liquid at room temperature leads to a ___________ effect.

Passage of particles or water through the semi-permeable membrane is referred to as:

• Imbibition is a type of diffusion where the water is absorbed by the solid particles, causing an enormous increase in volume.
• A biological mechanism involving the transfer of water and other soluble nutrients from one part of the plant to another through the xylem and phloem.

Which of the following case will affect the rate of diffusion?

Diffusion is different from osmosis, this is because:

Which one of the following refers for, increasing in increasing of temperature?

When you heat a sample of a solid, the particles in it become:

When liquids are heated, they:

The boiling point and melting point of water is:

• 100°C= 373K
• 0°C= 273K