Question: What is matter made up of?
Answer: Particles
Explanation: Matter is composed of tiny particles that are too small to be seen with the naked eye.
Question: What is the SI unit of mass?
Answer: Kilogram
Explanation: The standard unit for measuring mass in the International System of Units (SI) is the kilogram (kg).
Question: What is the SI unit of volume?
Answer: Cubic meter
Explanation: The standard unit for measuring volume in the SI system is the cubic meter (m³).
Question: What is the process of mixing of particles of two substances called?
Answer: Diffusion
Explanation: Diffusion is the process in which particles of one substance spread into another due to their random movement.
Question: Which state of matter has a definite shape and volume?
Answer: Solid
Explanation: Solids have a fixed shape and volume because the particles are tightly packed and only vibrate in place.
Question: What is the force that holds particles together in a substance?
Answer: Attraction
Explanation: Particles of matter attract each other with a force that varies depending on the state of the substance.
Question: What is the state of matter with the weakest intermolecular force?
Answer: Gas
Explanation: In gases, the intermolecular forces are the weakest, allowing the particles to move freely in all directions.
Question: What is the property of gases that allows them to be compressed easily?
Answer: Compressibility
Explanation: Gases can be compressed because there is a large amount of space between their particles.
Question: What is the name of the process where a solid changes directly into a gas?
Answer: Sublimation
Explanation: Sublimation is the direct transformation of a solid into a gas without passing through the liquid state.
Question: What is the term for the movement of particles from higher to lower concentration?
Answer: Diffusion
Explanation: Diffusion occurs when particles move from a region of high concentration to a region of low concentration until equilibrium is reached.
