Chemistry flashcards

134 SACE Chemistry cards across 4 modules (35 definitions, 58 key facts, 29 fill-the-gap, 12 formulas). Each session gives you 20 cards, due cards first. Swipe right for easy, left for hard, down for again. Keyboard: Space to flip, 1 to 4 to rate.

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What this deck covers

Topic 1: Monitoring the Environment (36 cards, 7 dot points)
Topic 2: Managing Chemical Processes (33 cards, 7 dot points)
Topic 3: Organic and Biological Chemistry (34 cards, 8 dot points)
Topic 4: Managing Resources (31 cards, 7 dot points)

Sample cards from this deck

Definition
Atmospheric pollutants and photochemical smog (SACE Stage 2 Chemistry)
Define Primary versus secondary pollutants
A primary pollutant is released directly into the atmosphere from a source. A secondary pollutant is not emitted directly but forms in the atmosphere from chemical reactions of primary pollutants, often driven by sunlight.
Definition
Catalysts and activation energy (SACE Stage 2 Chemistry)
Define Heterogeneous catalysts
Heterogeneous catalysts are in a different phase, usually a solid catalysing gaseous or liquid reactants (e.g. iron in the Haber process, platinum in catalytic converters). Reactants adsorb onto the catalyst surface, which weakens their bonds and holds them in favourable orientations; the products then desorb, freeing the surface.
Definition
Addition and condensation polymers (SACE Stage 2 Chemistry)
Define Addition polymerisation
Addition polymerisation joins many unsaturated monomers (each containing a $\text{C}=\text{C}$ double bond) into a long saturated chain. The double bonds open and the monomers add directly together, so no small molecule is eliminated and the repeating unit has the same atoms as the monomer.
Definition
Batteries: primary and secondary cells (SACE Stage 2 Chemistry)
Define Primary and secondary cells
A primary cell generates electricity from a redox reaction that is not practically reversible; when the reactants are consumed the cell is spent and discarded (e.g. zinc-carbon, alkaline).
Definition
Atomic absorption and emission spectroscopy (SACE Stage 2 Chemistry)
Define Atomic absorption
A sample solution is aspirated into a flame, which evaporates the solvent and breaks compounds into free, neutral, ground-state atoms. A hollow-cathode lamp made of the target metal emits light at exactly the wavelengths that element absorbs.
Definition
Dynamic equilibrium and Kc (SACE Stage 2 Chemistry)
Define Dynamic equilibrium
In a closed system, dynamic equilibrium is the state where the rate of the forward reaction equals the rate of the reverse reaction.
Definition
Biological molecules: proteins, carbohydrates and lipids (SACE Stage 2 Chemistry)
Define Proteins
Proteins are chains of amino acids joined by peptide (amide) bonds. Carbohydrates are monosaccharides (e.g. glucose) joined by glycosidic bonds. Lipids (triglycerides) form from glycerol and three fatty acids joined by ester bonds. Each can be broken back into its monomers by hydrolysis, the reverse reaction.
Definition
Electrolytic cells and electrolysis (SACE Stage 2 Chemistry)
Define Electrolytic cell
An electrolytic cell uses electrical energy from an external power source to force a non-spontaneous redox reaction to occur. The power supply pushes electrons to the cathode (negative in electrolysis), where reduction happens, and pulls electrons from the anode (positive), where oxidation happens.
Definition
Chromatography: GC and HPLC (SACE Stage 2 Chemistry)
Define Mobile and stationary phases
The stationary phase is fixed in place (a coating on the inside of the GC column, or packed particles in an HPLC column). The mobile phase flows through, carrying the sample.
Definition
Enthalpy and calorimetry (SACE Stage 2 Chemistry)
Define Exothermic and endothermic
An exothermic reaction releases heat to the surroundings, so the temperature rises and $\Delta H$ is negative; the products have lower energy than the reactants.