1. Occupies Space: Leaves take up physical space. They have a certain volume and mass, which means they occupy a definite amount of space in the environment.

2. Has Mass: Leaves have mass, which is the amount of matter they contain. The mass of a leaf can be measured using a scale or balance.

3. Made up of Particles: Leaves are composed of tiny particles, such as atoms and molecules. These particles are the building blocks of matter and are present in all physical objects.

4. Undergo Changes: Leaves undergo physical and chemical changes over time. For example, they may undergo photosynthesis, where they convert sunlight into chemical energy, or they may decompose and break down into simpler substances.

5. Interact with Other Matter: Leaves interact with other forms of matter in the environment. They exchange energy and matter with their surroundings, such as absorbing sunlight, releasing oxygen, and exchanging carbon dioxide with the atmosphere.

6. Respond to Force: Leaves respond to forces applied to them. For instance, they may fall off a tree due to gravity or sway in the wind.

Overall, leaves exhibit properties and characteristics that are consistent with the definition of matter, making them a form of matter.