Matter Flashcards
What is Matter?
Matter is anything that occupies space and can be perceived by our senses
What is mass?
The quantity of matter that a body contains is known as it’s mass.
What is volume?
The space occupied by a body is called it’s volume.
What is a matter made up of?
Matter is made up of extremely small particles called atoms.
What is an atom?
An atom is the smallest possible unit of matter that exhibits all the properties of that matter.
What is a molecule?
A molecule is the smallest unit of matter which exhibits all the properties of that kind of matter and also has an independent existence.
Which one is bigger?
- Atoms are bigger than molecules.
- Molecules are bigger than atoms.
- Molecules are bigger than atoms.
What are the characteristics of particles of matter?
- Particles of matter have space between them. This space is called interparticular or intermolecular space
- Particles of matter are always in random motion.
- Particles of matter attract each other.
What is kinetic energy?
Kinetic energy is the energy that an object has due to its motion.
What is intermolecular force of attraction?
The force of attraction between the particles of molecules of matter, which helps them together is known as intermolecular force of attraction.
What is a solid?
A solid has a definite shape and a definite volume.
The particles are tightly packed in solids.
The intermolecular force of attraction is very strong and intermolecular space is almost negligible.
The particles are not free to move.
The can only vibrate about their mean positions.
Solids are rigid and incompressible.
What is a Liquid?
A liquid has a definite volume but no definite shape.
The particles in a liquid are less tightly packed in comparison to solid.
The intermolecular force of attraction in weaker and intermolecular gaps are larger.
The particles are free to move within the bulk.
Liquid can flow and are therefore also called fluids.
What is a gas?
A gas has neither a definite shape nor a definite volume.
The particles in a gas are far apart.
The intermolecular force of attraction between the particles is very weak and the space between them is large.
The particles are free to move in any direction.
They can flow.
They can be compressed inside a small container and can spread into a large space available to them.
Gases also take the shape of the container in which they are kept.
How is the is the state of matter is mainly caused?
The state of matter is caused by:
- Change in temperature
- By applying pressure
What is melting or fusion?
The process by which a substance in its solar state changes to its liquid state on heating is called melting of fusion.
