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From these 25 words, as many per round as you like — up to all of them: first what is due today, then new ones. First you choose, then you fill the gap, then you write it yourself. Mistakes come back again shortly.
More about this list The last entry on this list is a escala de produção , and the English word that answers it overlaps in the middle and parts company at both ends. In the middle the two agree completely: a map has a scale, a thermometer has a scale, music has a scale, and work carried out « at production scale » is exactly à escala de produção . Beyond that, each language keeps senses the other has no use for. English « scale » is also the small plate on a fish, which Portuguese calls a escama , and it is the machine one stands on to be weighed, which is a balança and which English stubbornly pluralises, « a set of scales ». Portuguese runs off in the other direction. Uma escala is a stop on a journey, so um voo sem escalas is a non-stop flight and fazer escala em Lisboa is to change planes there; and a escala de serviço is the duty roster pinned up on a ward wall, which British usage calls « the rota ». None of those four crosses over, so the word is safe here and treacherous everywhere else.
The words
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Noun (f) (17)
Grammar for these: Definite article: o, a, os, as · Contractions: do, na, ao, pelo
a energia de ativação the activation energy Noun (f) C2 O catalisador baixa a energia de ativação da reação. The catalyst lowers the activation energy of the reaction.
a frequência de conversão the turnover frequency Noun (f) C2 A frequência de conversão conta as voltas de cada centro ativo. The turnover frequency counts the turns made by each active site.
a seletividade the selectivity Noun (f) C2 A seletividade decide quanto do produto errado aparece. Selectivity decides how much of the wrong product appears.
a catálise homogénea homogeneous catalysis Noun (f) C2 Na catálise homogénea tudo está dissolvido na mesma fase. In homogeneous catalysis everything is dissolved in the same phase.
a catálise heterogénea heterogeneous catalysis Noun (f) C2 A catálise heterogénea facilita a separação no fim. Heterogeneous catalysis makes the separation at the end easier.
a dispersão da fase ativa the dispersion of the active phase Noun (f) C2 Uma dispersão da fase ativa elevada aproveita melhor o metal. A high dispersion of the active phase makes better use of the metal.
a difusão nos poros the diffusion in the pores Noun (f) C2 A difusão nos poros pode ser mais lenta do que a reação. Diffusion in the pores can be slower than the reaction itself.
a desativação the deactivation Noun (f) C2 A desativação obriga a trocar o leito de tempos a tempos. Deactivation forces the bed to be changed from time to time.
a sinterização the sintering Noun (f) C2 A sinterização junta as partículas e reduz a área. Sintering draws the particles together and reduces the area.
a coqueificação the coking Noun (f) C2 A coqueificação tapa os poros com carbono. Coking blocks the pores with carbon.
a quiralidade the chirality Noun (f) C2 A quiralidade do catalisador passa para o produto. The chirality of the catalyst passes to the product.
a catálise enzimática enzyme catalysis Noun (f) C2 A catálise enzimática trabalha a temperatura amena. Enzyme catalysis works at a mild temperature.
a enzima imobilizada the immobilised enzyme Noun (f) C2 A enzima imobilizada pode ser usada muitas vezes. The immobilised enzyme can be used many times over.
a ligação ao substrato the binding to the substrate Noun (f) C2 A ligação ao substrato antecede qualquer transformação. Binding to the substrate comes before any transformation.
a medição no próprio reator the in-situ measurement Noun (f) C2 A medição no próprio reator evita alterar a amostra. Measuring inside the reactor itself avoids altering the sample.
a velocidade espacial the space velocity Noun (f) C2 A velocidade espacial diz quanto tempo a mistura fica dentro. The space velocity says how long the mixture stays inside.
a escala de produção the production scale Noun (f) C2 O que resulta no laboratório falha muitas vezes à escala de produção. What works in the laboratory often fails at production scale.
Noun (m) (8)
Grammar for these: Definite article: o, a, os, as · Contractions: do, na, ao, pelo
o material de suporte the support material Noun (m) C2 O material de suporte segura as partículas de metal. The support material holds the metal particles in place.
o limite de transferência de massa the mass transfer limit Noun (m) C2 Ao atingir o limite de transferência de massa, agitar mais não ajuda. Once the mass transfer limit is reached, stirring harder does not help.
o envenenamento the poisoning Noun (m) C2 O envenenamento por enxofre é praticamente irreversível. Poisoning by sulphur is practically irreversible.
o ligando the ligand Noun (m) C2 O ligando molda o espaço à volta do metal. The ligand shapes the space around the metal.
o excesso enantiomérico the enantiomeric excess Noun (m) C2 O excesso enantiomérico mede o quanto uma forma predomina. The enantiomeric excess measures how far one form predominates.
o ciclo catalítico the catalytic cycle Noun (m) C2 O ciclo catalítico devolve o catalisador ao ponto de partida. The catalytic cycle returns the catalyst to its starting point.
o reator de leito fixo the fixed-bed reactor Noun (m) C2 O reator de leito fixo é simples de operar. The fixed-bed reactor is simple to operate.
o leito fluidizado the fluidised bed Noun (m) C2 No leito fluidizado o sólido comporta-se quase como um líquido. In a fluidised bed the solid behaves almost like a liquid.
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“O achado” is a find on a dig, from ‘achar’, to find, which also means to think: ‘acho que sim’, I think so.
This list belongs to History, research and data — 19 lists and 667 words that can also be practised as a whole.
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