Across
- 4. The force exerted by a gas per unit surface area.
- 6. A subatomic particle found in the nucleus with no electric charge.
- 7. A reaction where one element takes the place of another element in a compound.
- 10. A basic process in which substances undergo change to form different substances.
- 12. A law stating that pressure of a gas is inversely proportional to its volume at constant temperature.
- 13. Smallest unit of a chemical element.
- 15. Negatively charged subatomic particle orbiting the nucleus.
- 18. The law that describes the relationship between the temperature, volume, and pressure of a gas.
- 19. The amount of space that a substance or object occupies.
- 20. A unit of measurement for substances in chemistry based on the number of entities in a sample.
- 22. Digitally meaningful figures in a measurement.
- 24. The measure of the quantity of product formed in a reaction.
- 25. A law that describes how gases expand when heated at constant pressure.
- 26. Analysis The process of using units to solve problems involving measurements.
- 27. The quantitative relationship between reactants and products in a chemical reaction.
- 32. The state in which both reactants and products are present in concentrations that have no further tendency to change with time.
- 34. The loss of electrons or an increase in oxidation state by a molecule, atom, or ion.
- 36. A group of atoms bonded together.
- 37. The number representing the amount of units in one mole of substance.
- 38. Decay The process by which a nucleus emits particles or energy.
- 39. Atoms of the same element with different numbers of neutrons.
- 40. The area around the nucleus of an atom where electrons are likely to be found.
Down
- 1. A reaction where ions are exchanged between two compounds forming new compounds.
- 2. The systematic examination of data to determine principles and outcomes.
- 3. The gain of electrons or a decrease in oxidation state by a molecule, atom, or ion.
- 5. The mass of one mole of a substance.
- 8. A substance that takes part in and undergoes change during a reaction.
- 9. The time it takes for half of a radioactive substance to decay.
- 11. The principle stating that matter is not created or destroyed during a chemical reaction.
- 14. A statistical distribution of speeds of particles in a gas.
- 16. A substance formed as a result of a chemical reaction.
- 17. A reaction in which one element or compound replaces another in a compound.
- 21. A reaction where a fuel combines with oxygen, releasing heat and light.
- 23. A chemical reaction in which a single compound breaks down into two or more simpler products.
- 28. Energy possessed by an object due to its motion.
- 29. The reagent that is completely consumed in a chemical reaction and limits the amount of product.
- 30. A preliminary explanation for a phenomenon used as a basis for further investigation.
- 31. A chemical reaction where two or more simple substances combine to form a more complex product.
- 33. Positively charged subatomic particle in the nucleus.
- 35. A model that describes the behavior of gases in terms of particles in motion.