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