Across
- 3. The amount of product that is made in a chemical reaction
- 7. The most reactive group 7 element
- 11. A substance that speeds up a chemical reaction without being permanently changed itself
- 12. A process in which energy is transferred from the surroundings to stores of energy in chemical bonds
- 14. The name of the process that is used to make ammonia
- 17. A substance that changes colour based on the pH
- 19. A reaction between an acid and a base
- 23. The loss of electrons
- 24. A process in which energy is transferred from stores of energy in chemical bonds to the surroundings
- 26. A negative ion
- 31. A reaction that can go in the forward and backwards direction
- 33. This is where an electron is found in an atom
- 35. The number of electrons in the outer shell of an alkali metal
- 36. The type of formula that tells us the simplest whole number ratio of atoms of an element in a substance
- 38. Atoms of an element with the same number of protons but different numbers of neutrons
- 39. A base that is soluble in water
- 41. The least reactive alkali metal
- 42. A charged particle that is formed by the loss or gain of electrons by an atom
- 43. The substance formed when an acid reacts with a base
- 45. A row in the periodic table
- 46. The colour of chlorine gas
- 47. A rock that contains enough of a compound to extract a metal for profit
- 49. A system that no substances can enter or leave
- 50. The substance that is made in a chemical reaction
- 52. A positive ion
- 53. The negative electrode
- 54. The neutral particle present in the nucleus of an atom
Down
- 1. A vertical column in the periodic table
- 2. The temperature does this in an exothermic reaction
- 4. An allotrope of carbon consisting of a sheet that is one atom thick
- 5. The minimum amount of energy needed by colliding particles for a reaction to happen
- 6. A molecule which is made up of two atoms, for example a chlorine molecule
- 8. Unreactive
- 9. The gain of electrons
- 10. The name of the variable that is kept the same during an experiment
- 13. pH7
- 15. An allotrope of carbon that is incredibly hard
- 16. A reaction in which a more reactive element displaces a less reactive element from one of its compounds
- 18. A bond which involves the electrostatic force of attraction between oppositely charged ions
- 20. The breakdown of an ionic compound using electrolysis
- 21. What two particles must do in order for a reaction to take place between them
- 22. The technique used to separate an insoluble solid from a liquid
- 25. The general name for the elements in group 7
- 27. An unreactive metal that is found in its native state
- 28. An allotrope of carbon that conducts electricity
- 29. An insoluble solid
- 30. The colour of copper sulfate crystals
- 32. An ionic compound that is molten or dissolved in water and conducts electricity
- 34. The colour of copper oxide
- 37. The reactant that runs out first in a chemical reaction
- 40. The positive electrode
- 44. The constant that tells us the number of particles in one mole of a substance
- 48. A reaction in which oxidation and reduction take place
- 49. When a gas turns into a liquid
- 51. The type of bonding when electrons are shared