1. the smallest unit of matter that retain all of the physical properties of that type of matter is a(n) . 2. within a plant, water (h2o) and carbon dioxide (co2) can be combined (using the energy of sunlight) to produce glucose (c6h12o6) and oxygen (o2). if you were to write out this chemical reaction, water and carbon dioxide are each an example of a(n) while glucose and oxygen are each an example of a(n) . 3. h2so4, sulfuric acid, contains three different types of atoms: hydrogen (h), sulfur (s), and oxygen (o). each of these atoms represents a different . since the three types are combined in a fixed ratio, this means that h2so4 is a(n) . 4. the scientific study of matter is called . 5. if two or more atoms are bonded together, they form a(n) . 6. is anything that occupies space and/or has any substance.