Chemistry for Skincare I

2. Negatively charged particles found in the nucleus of an atom.
5. More positive hydrogen ions than negative hydroxide ions.
9. The core of an atom that contains protons and sometimes neutrons.
10. Two or more atoms joined together by a chemical bond.
11. measures higher than 7 on the pH scale.
13. Study of matter and the physical and chemical changes of matter.
15. Substances that cannot be broken down into simpler substances.
16. The smallest complete unit of an element.
17. The ability to allow liquids or gases to pass through a membrane, such as the skin.
18. Anything that occupies space and has weight.
19. Unit of measurement that indicates whether a substance is acidic, alkaline or neutral.
20. Particle with no electric charge found in the nucleus of an atom.

1. Has never been alive and does not contain carbon.
3. Matter having definite weight and volume, but no definite shape.
4. Matter that has definite weight, volume and shape.
6. Two saccharides linked together
7. Matter that has definite weight but indefinite volume and shape.
8. Triglycerides, fats and steroids, that form components that fill the intercellular spaces in the skin.
9. Measures 7 on the pH scale
10. Two or more substances that are physically combined
12. Many saccharides linked to form larger, more complex molecules.
14. Positively charged particle in the nucleus of an atom.