How to Play
• Answer the Science General Knowledge questions, then find the words in the grid.
• Words appear horizontally, vertically, diagonally and backwards. Some words may overlap.
Quiz Questions
1. A rule that requires eight electrons to fill the valence orbitals.
2. Polymers are large, usually chain-like molecules, built from these small molecules, and are the basis for synthetics, such as rubbers and plastics.
3. This is the study of adverse effects of chemicals on living organisms.
4. It is used to recover precious metals from ore, by combining them with mercury. It combines mercury and another element to create amalgam, used in dentistry, chemistry, and mining.
5. A combined state of elements, which bind together in special ways, have the same composition no matter where they are, and can be broken down into their elements through chemical changes.
6. This gas law involves the characteristics of gas, such as pressure, volume, number of moles, and temperature in kelvins. If any three of the properties is known, the fourth can be determined by this law.
7. A solution which contains as much solute as will dissolve at a given temperature.
8. This element, along with oxygen, carbon, and hydrogen, form the basis for all biologically important molecules.
9. Substances that release hydrogen ions (proton donors), when in acqueous solution.
10. The elements, classed as rare earth elements. Nano-detectors are based on these fluorescence complexes. The fluorescence complexes have already been in use for some time, for examining assay substances.
11. A versatile element, which is the second most abundant on Earth, and is an essential mineral.
12. An oxidation-reduction reaction, where electrical energy is used to produce a chemical change, such as hydrogen and oxygen reacting to form water.
13. Nitrogen, oxygen, and hydrogen gases do not contain single atoms as argon, but these molecules, are made up of two atoms.
14. A lead-based product, once used to connect copper pipes in water systems.
15. It forms all organic compounds. Diamond is a form of this, in which each one of its atoms form bonds with four other of these atoms. When four of these atoms are bound to one of the atoms, they have a tetrahedral arrangement.
16. They are fundamental substances, that cannot be broken down by chemical means, into other substances. There are thirty known to be essential to human life.
17. A substance that speeds up a reaction without changing the temperature, or reactant concentrations. Thousands called enzymes, allow our body to speed up reactions, to sustain normal body temperatures.
18. A gas that is usually associated with petroleum deposits, and consists mainly of methane.
19. Calculating these, of certain elements, uses a formula: mass over volume. Gold is 19.3 and Mercury is 13.6.
20. The atomic weight or molecular weight, measured in grams, of any element or compound.
21. This analysis changes one unit to another, via conversion factors, based on the equivalence statments between the units. It is used to convert eg centimeters to inches.
22. This ductile and malleable steel contains less than 0.2% carbon, and is used for nails, cables, and chains.
23.The second simplest alkane, which is a compound that contains saturated carbon atoms. It is isolated on an industrial scale from natural gas, and as a by-product of petroleum refining.
24. Usually weak acids with a carbon-atom backbone, and commonly contain the carboxyl group.
• Find the answers to the quiz in the grid below.