GLOSSARY 2

2. or process - a step by step method or way of doing something.
5. – process where solvent molecules pass through a semipermeable membrane.
6. – multi-celled organisms that use photosynthesis to make food and grow.
8. – something too tiny or small to see with the naked-eye.
10. - basic unit of matter that consists of protons, neutrons, and electrons.
11. - a group of two or more atoms.
14. – method or process of separating a mixture into its individual components.
16. – plant growth from a seed or spore.
18. – mass per unit volume of a substance or object.
19. – substance or material consisting of very large molecules connected together.
20. – microscopic single-celled organisms that live everywhere.

1. membrane – structure or layer that allows certain molecules or substances to pass through.
2. – substance that adds color to other materials.
3. – biological process where plants use sunlight to make food.
4. – the amount of space that an object or substance takes up.
7. – the study of living things.
9. – the study of matter on a small scale of atoms and molecules.
12. – a white powdery substance that can be used as a household cleaner.
13. – the amount of matter in a substance or object.
15. – multi-celled living creatures.
17. – any substance or object that takes up space and has mass.