Across
- 3. compound, a pure substance formed from two or more non-metals
- 5. bond, the simultaneous strong attraction of positive and negative ions in an ionic compound
- 6. the breakdown of a metal resulting from reactions with chemicals in its environment
- 9. displacement, a reaction that occurs when elements in different compounds displace each other or exchange places producing two new compounds
- 11. a pure substance composed of two or more elements in a fixed ratio
- 13. a compound that separates into ions when it dissolves in water- producing a solution that conducts electricity
- 17. ion, an ion made up of more than one atom that acts as a single particle
- 18. a column of elements in the periodic table with similar properties alkali metals the elements (except hydrogen) in the first column of the periodic table (Group 1)
- 20. a row of elements in the periodic table
- 21. a chemical present at the start of a chemical reaction, that is used up during the reaction
- 22. a negatively charged ion
- 23. equation, a way of describing a chemical reaction using the chemical formulas of the reactants and products
- 24. a reaction in which two reactants combine to make a larger or more complex product; general pattern: A + B -> AB
- 27. gases, the elements in the eighteenth column of the periodic table (Group 18)
- 30. a charged particle that results when an atom gains or loses one or more electrons
- 31. equation, a way of describing a chemical reaction using the names of the reactants and products
- 32. reaction, a process in which substances interact causing the formation of new substances with new properties
- 33. steel, steel that has been coated with a protective layer of zinc which forms a hard and insoluble oxide
- 34. bond, a bond that results from the sharing of outer electrons between non-metal atoms
- 35. the elements in the seventeenth column of the periodic table (Group 17)
- 36. a pure substance that cannot be broken down into simpler substances
Down
- 1. a chemical that is produced during a chemical reaction
- 2. a description of a substance that does not involve forming a new substance; for example colour- texture- density- smell- solubility- taste- melting point and physical state
- 4. Hazardous Materials Information System, provides Canadian workers with information on the safe use of hazardous products in their workplace.
- 7. earth metals, the elements in the second column of the periodic table (Group 2)
- 8. the rapid reaction of a substance with oxygen to produce oxides and energy; burning
- 10. a particle in which atoms are joined by covalent bonds
- 12. a reaction in which a large or more complex molecule breaks down to form two (or more) simpler products; general pattern: AB -> A + B
- 14. a positively charged ion
- 15. diagram, a model representing the arrangement of electrons in orbits around the nucleus of an atom
- 16. molecule, a molecule consisting of only two atoms of either the same or different elements
- 19. compound, a compound made up of one or more positive metal ions (cations) and one or more negative non-metal ions (anions)
- 24. displacement, a reaction in which an element displaces another element in a compound producing a new compound and a new element
- 25. combustion, a combustion reaction of hydrocarbons that may produce carbon monoxide- carbon- carbon dioxide- soot, water and energy; occurs when the oxygen supply is limited
- 26. combustion, a combustion reaction of hydrocarbons that uses all the available fuel and produces only carbon dioxide- water and energy; occurs when the supply of oxygen is plentiful
- 28. of conservation of mass, the statement that in any given chemical reaction the total mass of the reactants equals the total mass of the products
- 29. property, a description of what a substance does as it changes into one or more new substances