# States Of Matter

## 1. what is matter? how do we weight it?

• Matter is anything that takes up space. Matter consists of various types of particles, each with mass and size.
• we weight matter by balancing the weight.

## 2. what are the 3 states of matter? is there a fourth?explain each one and use a image.

• Solid is a sample of matter that retains its shape and density when not confined.
• Liquid is a sample of matter that conforms to the shape of a container in which it is held, and which acquires a defined surface in the presence of gravity.
• Gas is a sample of matter that conforms to the shape of a container in which it is held and acquires a uniform density inside.
The fourth state of matter is plasma state. And there is also a fifth state of matter called be condensates

## 3. how do the particles move around within the 3 states of matter? use a diagram

• gas the particles spread out
• liquid the particles are quite close together, have no regular arrangement
• solids the particles are tightly packed

## 4. what are the properties of the 3 states of matter?

• Solid doesn't change shape easily,particles don't move around and particles are in a aligned array.
• Liquid takes up space in a container,has surface tension and moves around.
• Gas is invisible and particles move around freely.

## 5. What are 5 changes of the state of matter?Explain each one and use a diagram.

• Melting a transition from solid to liquid.
• Freezing a transition from liquid to solid.
• Evaporation a transition from liquid to gas.
• Condensation a transition from gas to liquid.
• Deposition a transition from gas to solid.
• Sublimation a transition from solid to gas.

## 6.Describe the physical and chemical changes of matter? Which one is reversible and which one is irreversible.

• physical change only changes the appearance of a substance, not its chemical composition.
• chemical change causes substance to change into an entirely substance with a new chemical formula.
chemical change is irreversible and physical change is reversible.