Across
- 4. An arrangement of elements in order of atomic number
- 6. the first element in the periodic table
- 7. It is defined as exactly 6.02214076×10²³ particles
- 9. the unit of length in the metric system
- 12. A measure of the ability of a substance, or more generally of any physical system, to transfer heat energy to another physical system
- 14. An element with the O for symbol
- 17. A compound with the chemical symbol NaCl
- 18. It is the numerical equivalent of the atomic mass of an element
- 19. a measurement of how much matter is in an object
- 20. Is the scientific discipline involved with elements and compounds composed of atoms, molecules and ions
- 21. Water freezes at 0° and boils at 100° under standard conditions.
- 22. Any substance that cannot be composed into smaller substances by chemical processes
Down
- 1. An element with the symbol of Ca
- 2. The element with an atomic mass of 14.0067
- 3. Its chemical symbol is H2O
- 5. The english measurement of temperature
- 8. A substance that is made of two or more elements
- 10. An element with the atomic number 6
- 11. A measurement system that uses kilo, centi, deci, etc.
- 13. A measurement system that uses inches, foot,yard, etc.
- 15. A way of showing chemical proportions of atoms
- 16. an element with the atomic mass of 39.0983