Complete. Metals and no-metals

Complete the table with the correct word.

Think about it. The periodic table and chemical formulas

Remember what you have studied in this section and answer the questions: Why do we use symbols for elements and compounds? → We use symbols… to make it easier to… Nomenclature is different in…

Correct. Exploration and conquest

Rewrite the following sentences and correct the errors: In the middle of the 19th century, much of Africa, Asia and the oceans were well known to Europeans. The first European expeditions were carried…

Educating girls

A woman has the obligation to know all about what we might call the feminine side of life, and so domestic science is, perhaps, her baccalaureate. An architect cannot be a good architect if he cannot…

Pablo Picasso, a tireless creator - Art in the 20th century

Pablo Picasso (1881-1973) saw great scientific progress in his time, but he also saw this progress used for war and destruction. As an artist, he incorporated the events of the world around him into his…

El mensaje de la música: recaudar fondos

UNIDAD I 5to.docx

Amigos

Aparells i sistemes

Pàgina web on podrem ampliar els nostres coneixements sobre els teixits, els òrgans i els aparells del cos humà.

Calcula. Operaciones con polinomios (3)

Recuerda responder según las siguientes indicaciones Efectúa las multiplicaciones siguientes: 4 · (–2x3 + 8x – 5) = –7 · (x2 – 7x + 3) =

Resuelve. Ecuaciones de primer grado (2)

Resuelve las ecuaciones siguientes: 12 + x + 4x = 2x – 3    →   x = 25 + 6x = 5 + x    →   x = 8x – 17 = 4x + 11    →   x = 6 – 3x = x – 6    →   x =