Across
- 5. When two elements combine, it forms a ______
- 6. When this type of element is not in a compound, it is paired up with the same element as itself
- 7. What combines/reacts in the chemical reaction, on the left side of the equation.
- 9. When an atom gains or loses an electron, it is considered a(n) ____
- 11. To balance a reaction, a _____ is written in front of the chemical equation.
- 13. This is a type of compound that is between two or more non-metals, has a low melting point, and shares its valence electrons.
- 14. Replacement When one element switches places with another, follows the pattern A + BC —> B + AC
Down
- 1. When a reactant breaks down into simpler products, follows the pattern AB —> A + B
- 2. These are the small numbers that are after the element it’s combined to within a chemical equation, they can’t be changed.
- 3. What comes out of the chemical reaction, on the right side of the equation
- 4. When two or more elements combine together, follows the pattern A+B —> AB
- 8. A chemical reaction that releases heat, carbon dioxide, and water. Usually an explosive reaction.
- 10. Replacement When two reactants trade elements, follows the pattern AB + CD —> AD + CB
- 12. This is a type of compound that is between a metal and a non-metal, has a high melting point, and transfers its valence electrons.