states that are present in our universe. Solid, liquid, and gas and each state goes through processes when environment and temperature is adjusted, to convert from one state to another. Solid is a state where molecules are closely backed in columns, resulting in exact volume, density, and shape. Liquid is a state where molecules are loosened up, resulting in fluid like substance with no definite shape but volume. Gas is a state where molecules spread out, resulting in no physical shape of fixed volume. Each state goes through phases where heat is deducted and added, to transform into another state.

2. The one state that has definite volume and shape is a solid. Molecules are packed together in columns, while the molecules move at slow speed, resulting in strong density, and an exact shape and volume.

3. Matter is all around us. Matter is the air you are breathing.

Even in solids there is a small space between the atoms

Liquids do not hold their shape at room temperature

Gases are always moving. There is so much space between the atoms in gas that you can move around in them easily