Is the word científica the same in Brazilian and European Portuguese?

Yes

The word "científica" is identical in meaning, spelling, and grammatical function in both Brazilian and European Portuguese. The only difference is pronunciation. In Brazilian Portuguese, vowels—especially unstressed ones—are generally more "open" and clearly articulated. In European Portuguese, unstressed vowels tend to be "reduced" or "closed," meaning the "i" in "científica" is often pronounced much more subtly, almost disappearing in rapid speech.

Brazilian Portuguese Examples

1. A pesquisa científica é muito importante para o país. (Scientific research is very important for the country.)
2. Ela tem uma mente científica. (She has a scientific mind.)
3. O método científico ajuda a entender a natureza. (The scientific method helps to understand nature.)
4. Esta descoberta científica mudou o mundo. (This scientific discovery changed the world.)
5. Eles seguem uma lógica científica. (They follow a scientific logic.)

European Portuguese Examples

1. A investigação científica é fundamental para o progresso. (Scientific investigation is fundamental for progress.)
2. A comunidade científica está em choque. (The scientific community is in shock.)
3. É preciso uma análise científica detalhada. (A detailed scientific analysis is needed.)
4. A revista científica apresentou novos dados. (The scientific journal presented new data.)
5. A evidência científica é irrefutável. (The scientific evidence is irrefutable.)