Final answer:
Ink and water are substances that are used to make things, and so they can be considered materials, whereas inkpot, pen, and glass jar are objects that are not materials themselves.
Step-by-step explanation:
The question asks to identify which of the given options are materials. In chemistry, a material is usually defined as a substance that is used to make things. Looking at the options provided, inkpot, pen, and glass jar are objects that may be made from various materials but are not materials themselves. On the other hand, ink and water are substances and therefore can be considered materials. For instance, ink is a liquid that contains pigments or dyes and is used for writing, printing, or drawing, while water is a chemical compound essential for all forms of life and can be used in various applications ranging from industrial to personal.
Here are other examples of materials:
- The water in a pool
- A pile of pennies (which are made of materials like copper and zinc)
- A pallet of wood pellets (wood is a material)