Science Crossword

2. a kind of molecular geometry in which the central atom has two lone pairs of electrons and is associated with two bond pairs
6. the mutual sharing of one or more pairs of electrons between two atoms.
7. a compound or substance that has been purified or prepared, especially artificially.
9. a stable subatomic particle occurring in all atomic nuclei, with a positive electric charge equal in magnitude to that of an electron, but of opposite sign.
11. processes in which chemical species break up into simpler parts.
13. compounds made up of ions that form charged particles when an atom (or group of atoms) gains or loses electrons
14. the basic unit of a chemical element.
16. an action performed or a feeling experienced in response to a situation or event.
18. the combining power of an element, especially as measured by the number of hydrogen atoms it can displace or combine with.
19. a reaction in which one element is substituted for another element in a compound.
20. a stable subatomic particle with a charge of negative electricity, found in all atoms and acting as the primary carrier of electricity in solids

1. A molecule or polymer with a single backbone the longest continuous chain of atoms bonded to each other, exclusive of all others, that comprise a polymer.
3. describe molecules and polyatomic ions that have one atom in center and four atoms at the corners of a tetrahedron
4. a thing or person that is the result of an action or process.
5. a chemical bond formed when one atom gives up one or more electrons to another atom.
8. the process by which one or more chemical reactions are performed with the aim of converting a reactant or starting material into a product or multiple products.
10. consists of a central atom connected to three atoms arranged in a triangular pattern around the central atom.
11. occur when parts of two ionic compounds are exchanged, making two new compounds.
12. an arrangement of elements in a particular form, figure, or combination.
15. any atom or group of atoms that bears one or more positive or negative electrical charges.
17. a substance that takes part in and undergoes change during a reaction