Across
- 1. a positively charged ion; formed when one or more electrons are removed from an atom
- 5. ions made up of more than one atom
- 8. bond the electrostatic force that holds oppositely charged particles together in an ionic compound
- 10. a statement that used chemical formulas to show the identities and relative amounts of the substances involved in a chemical reaction
- 12. a solid produced during a chemical reaction in a solution
- 16. compound that contains ionic bonds
- 18. a chemical reaction that occurs when a single compound breaks down into two or more elements or new compounds
- 19. a chemical reaction in which heat is released to the surroundings
Down
- 1. a rearrangement of the atoms in one or more substances to form different substances
- 2. the number written in front of the chemical formulas in a balanced chemical equation; coefficients indicate the relative numbers of reactants and products in the reaction
- 3. a negatively charged ion; formed when one or more electrons are added to an atom
- 4. forms when two or more atoms bond covalently
- 6. a replacement reaction in which the atoms of one element replace the atoms of another element in a compound
- 7. the force that holds two atoms together
- 9. a chemical reaction in which oxygen combines with a substance and releases energy in the form of heat and light
- 11. the starting substances in a chemical reaction
- 12. A type of covalent bond between atoms that differ in electronegativity. The shared electrons are pulled closer to the more electronegative atom, making it slightly negative and the other atom slightly positive.
- 13. A reaction that ABSORBS energy in the form of heat
- 14. a chemical reaction in which two or more substances react to yield a single product
- 15. the substances that are formed by the chemical change
- 17. a replacement reaction in which ions are exchanged between two compounds