Across
- 5. A carboxylic acid is an organic molecule containing a -COOH group. An example of a carboxylic acid is acetic acid
- 6. is an ionic compound that dissolves in water to produce ions, which can conduct electricity
- 7. relating to elements in periodic table
- 8. the dominant male animal in a particular group
- 10. the contour of the lower edge of a person's jaw
- 11. is an organic molecule that only contains single carbon-carbon bonds
- 12. is the movement of particles from an area of higher concentration to one of lower concentration
- 14. the process of becoming smaller.
- 17. table of periodic elements
- 19. a type of change where the physical properties of matter change
- 20. gases any of the chemically inert gaseous elements of the helium group in the periodic table
Down
- 1. A chemical that can dissolve in water, combine with acids to form salts, and make acids less acidic
- 2. dominant leader, lone wolf, cool and popular
- 3. is a chemical element; it has symbol He and atomic number 2.
- 4. a colourless, odourless reactive gas, the chemical element of atomic number 8 and the life-supporting component of the air.
- 5. a change of materials into another, new materials with different properties and one or more than one new substances are formed
- 9. is one made up of two elements
- 13. a chemical element; it has symbol N and atomic number 7.
- 15. hand and feet actions
- 16. a substance made by mixing other substances together.
- 18. the action of becoming larger or more extensive.