Hint | First Letter | Answer | % Correct |
---|---|---|---|
The lowest possible temperature, at which, theoretically, atoms stop moving. | A | Absolute zero | 83%
|
Any of the soft, light, reactive metals of Group 1 of the periodic table. | A | {Alkali} metal | 82%
|
Any compound which yields H+ ions (protons) when dissolved in water. | A | Acid | 78%
|
Any of a class of generally water-soluble compounds, having bitter taste, that turn red litmus blue, and react with acids to form salts. | B | Base | 78%
|
A substance that increases the rate of a chemical reaction without being consumed in the process. | C | Catalyst | 73%
|
In the International System of Units, the base unit of thermodynamic temperature. | K | Kelvin | 70%
|
A row in the periodic table of the elements. | P | Period | 64%
|
The quantity of matter which a body contains, irrespective of its bulk or volume. | M | Mass | 63%
|
The movement of particles from an area of higher concentration to one of lower concentration. | D | Diffusion | 56%
|
(of a reaction) That releases energy in the form of heat. | E | Exothermic | 54%
|
A liquid (or a gas) that dissolves a solute in solution. | S | Solvent | 54%
|
A globular protein that catalyses a biological chemical reaction. | E | Enzyme | 53%
|
A solution that has had additional solvent, such as water, added to it into order to make it less concentrated. | D | Dilution | 49%
|
A chemical reaction which can go both ways: reactants make products and products make reactants. | R | {Reversible} reaction | 41%
|
The science of measuring the heat absorbed or evolved during the course of a chemical reaction or change of state. | C | Calorimetry | 32%
|
A substance that, in solution or when molten, ionizes and conducts electricity. | E | Electrolyte | 29%
|
Any particle in the nucleus of an atom. | N | Nucleon | 29%
|
The unique temperature and pressure at which the solid, liquid and gas phases of a substance are all in equilibrium. | T | {Triple} point | 29%
|
A chemical compound composed of only two elements. | B | {Binary} compound | 26%
|
The smallest repeating structure (parallelepiped) of atoms within a crystal, from which the structure of the complete crystal can be inferred. | U | {Unit} cell | 23%
|
The energy that holds protons and neutrons together in the atomic nucleus. | B | {Binding} energy | 20%
|
The number of significant digits to which a value may be measured reliably. | P | Precision | 19%
|
The process of gases passing through a hole or holes considerably smaller than the mean free path of the gas molecules. | E | Effusion | 15%
|
To add something to (ethanol) that makes it unsuitable for consumption but leaves it suitable for most other purposes. | D | Denature | 12%
|
The process by which a compound body breaks up into simpler constituents. | D | Dissociation | 9%
|
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