Across
- 3. the chemical element of atomic number 11
- 4. n electromagnetic wave of high energy and very short wavelength, which is able to pass through many materials opaque to light.
- 6. each of more than one hundred substances that cannot be chemically interconverted or broken down into simpler substances and are primary constituents of matter.
- 9. about the same mass as a proton but without an electric charge, present in all atomic nuclei except those of ordinary hydrogen.
- 10. Table a table of the chemical elements arranged in order of atomic number, usually in rows.
- 11. requiring the absorption of heat.
- 14. Any of a class of compounds that form hydroxyl ions (OH) when dissolved in water
- 15. relating to an atom or atoms.
Down
- 1. a substance with particular chemical properties
- 2. physical matter of which a person or thing consists and which has a tangible, solid presence.
- 3. liquid mixture
- 5. When a substance (or a few substances) change into another substance.
- 6. the release of heat.
- 7. In physics, the ability to do work
- 8. something that can be dissolved
- 12. The substances that result from this recombination of atoms are called the products of the reaction.
- 13. A measure of how much matter is in an object.