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. Because matter cannot be cooled below 273.15 degrees C or 0 K, this temperature is defined as this zero.
2. A hydrogen-containing compound, that produces hydrogen ions in an aqueous solution.
3. A chemical compound that can act as both an acid and a base.
4. A highly corrosive, fuming liquid mixture of concentrated nitric acid and hydrochloric acid, meaning “royal water” in Latin.
5. This form of radioactive decay results in spontaneous emission of these particles.
6. This group, consisting of a carbon atom, double bonded to oxygen, are found in aldehydes, and ketones.
7. A substance that increases the chemical reaction rate, without changing the temperature or reactant contractions, and without being changed itself.
8 A substance found in virtually all organisms, and is essential for the formation of many molecules, such as vitamin D.
9. Silver, the best conductor of electricity, is too expensive, therefore copper is used. Important alloys of copper such as this is used for coins; brass (copper/zinc) for electrical fixtures, hardware etc; and bronze (copper/tin) for bells, sculptures etc.
10. An amino acid residue, that helps to stabilise the tertiary structure, in high-protein foods. Some foods considered rich in this include poultry, eggs, beef, and whole grains. In high-protein diets, it may be partially responsible for reduced blood pressure, and stroke risk.
11. The foods we eat are made up of complicated chemical compounds; the most common being esters, composed of glycerol, and long-chain carboxylic acids. This most common animal product is typical of these substances.
12. An atom or group of atoms in hydrocarbon derivatives, that are responsible for characteristic reactions and properties.
13. Salt of nitrous acid. The name also refers to an organic compound, having the -ONO group, and occurs naturally in plant foods as part of the nitrogen cycle, between air, land and water environments. Leafy green vegetables, and some root vegetables, such as beetroot, are high in this naturally occurring compound.
14. Also known as alkenes are unsaturated hydrocarbons, and contain at least one carbon/carbon double bond.
15. These are similar in structure to fats, in that they are esters of glycerol, but contain only two fatty acids, substituting one of the fatty acids in the triglyceride with a phosphoric acid molecule, and if this phosphate residue is chemically combined with an alcohol, the product is one of these.
16. Elementary particles of electromagnetic radiation.
17. A particle with the same mass as an electron, but with a charge of +1.
18. Hydrogen is the simplest of all atoms, with one electron, and one of these, which has a positive charge in it’s nucleus.
19. A gas that does not behave as an ideal gas, because it’s molecules interact with one another.
20. The amount of heat energy required to raise the temperature of one gram of a substance, by one celcius degree.
21. Instruments used to measure properties of light, over a specific portion of the electromagnetic spectrum. They split or disperse the light, from an object into its component wavelengths, so that it can be recorded, then analysed.
22. Types of lipids important in forming membranes, which contain a phosphate. The the group is made up of a fatty acid, running parallel to, and linked to sphingosine, an amino alcohol.
23. Specific matter, such as elements, compounds, or mixtures.
24. A standard used for comparison in measurements, to tell what scale or standard is being used in the results.
25. Refers to the quantity of a product obtained from a chemical reaction. Chemists refer to experimental yield, actual yield, theoretical yield, and percent yield to differentiate between calculated yield values, and those actually obtained from a reaction.
• Find the answers to the quiz hidden in the grid below.