Right in the middle of a very busy city, there is a peaceful place. It's a cosy park, closed off and forgotten, a true oasis. This is where you will find Ollie, the little blue owl and his friends - a small stork, a young frog and five little birds. Together they all have lots of adventures.
If you want to meet them, you are very welcome there…if you can find them.
(chemical reactions), however, transform a substance into one or more new substances with different properties. Rusting iron, burning wood, baking a cake, or digesting food are all chemical changes. For instance, when iron rusts, it reacts with oxygen to form iron oxide (Fe₂O₃), which is brittle and reddish-brown—unlike metallic iron. Dingrando notes key indicators of chemical change: unexpected color change, production of gas (bubbles without boiling), absorption or release of heat/light, or formation of a precipitate.
Understanding these differences is not merely academic. In industry, distinguishing between physical and chemical changes ensures safe handling of materials. For example, freezing water (physical) is harmless, but electrolyzing water (chemical) produces explosive hydrogen gas. Environmental scientists track chemical changes like combustion of fossil fuels to understand pollution, while recycling processes rely on physical changes to reshape materials without altering their composition. quimica materia y cambio dingrando pdf 38
I understand you're looking for help with an essay related to the textbook Química: Materia y Cambio by Dingrando, specifically referencing page 38 (or PDF page 38). Since I don't have direct access to the PDF of that specific textbook, I'll provide a helpful framework for writing your essay based on common content found in Chapter 1 or 2 of Dingrando's Chemistry: Matter and Change (often titled "Introduction to Chemistry" or "Matter and Change"). For example, freezing water (physical) is harmless, but
affect one or more physical properties of a substance without altering its chemical identity. Common examples include melting ice, boiling water, tearing paper, or dissolving sugar in water. In each case, the substance remains chemically the same—water is still H₂O, and sugar remains C₁₂H₂₂O₁₁. These changes are often reversible and involve no new substance formation. Dingrando typically highlights that physical changes relate to state (solid, liquid, gas) or form, not composition. In each case
Ollie is an animation series for children aged 2 to 5. Each episode lasts 4 minutes. In a quiet park in the middle of a busy, noisy city, Ollie and his friends experience their adventures. The series wants to stimulate the imagination of children, with visually enchanting elements. These are stories about being afraid, discovering things, beauty, how to be alone, the value of friendship ...
Ollie is a series that appeals to the dreamer in all of us and can be seen on Ketnet Junior, via the Ketnet Junior app and Ketnetjunior.be.
