Across
- 2. compound that dissolves in water to form a solution with a pH lower than 7
- 3. system an experiment in which all reactants and all products of a chemical reaction are accounted for
- 5. chemical reaction that occurs when oxygen reacts with a substance to form a new substance and give off energy
- 6. slow chemical change that occurs when oxygen in the air reacts with a metal
- 7. genetically identical copy of an entire organism or of its cells or genes; cloning is the process of creating a clone
- 8. chemical combination of two or more elements in a specific ratio
- 10. substance that helps a chemical reaction proceed more quickly
Down
- 1. breaker special wire that heats up and turns off switch when excess current flows through an electrical circuit
- 2. the smallest part of an element that is representative of that element a neutral particle made up of a nucleus containing protons and neutrons, and in which the number of electrons equals the number of protons alkali metals group 1 elements in the periodic table not including hydrogen; the most reactive of the metals
- 4. path that change particles flow through
- 6. reactions reaction that takes place when two or more substances react to form new substances
- 9. mass unit measure of atomic mass; 1 amu is equal to 1/12th the mass of a carbon 12 atom