Across
- 2. The basic building blocks of matter
- 4. A _ is an electrostatic force that keeps the atoms of elements together in a compound.
- 7. A substance that cannot be broken down into any other substance
- 8. a set of chemical symbols showing the elements present in a compound and their relative proportions, and in some cases the structure of the compound.
- 9. Formed by sharing electrons
- 10. Electrons in the outermost energy shells of an atom
Down
- 1. Two or more atoms bonded together
- 3. When an atom is stable and has eight valence electrons
- 5. A _ is a process in which one or more substances, also called reactants, are converted to one or more different substances, known as products.
- 6. Formed by giving away electrons