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Chemistry We will characterize these physical properties! When sugar dissolve in water Solubility is an example of (a physical property) that is the ability of a substance to dissolve into another. This capability, as regards the dissolution of a solid in a liquid is limited, or there are a maximum of solute that can dissolve in a certain amount of a solvent. ACTIVITY From what you've studied about solutions, differentiate solute and solvent. Have you noticed that when you mix oil and vinegar for salads, the oil sits on top of the vinegar? This is because the oil has a lower density than the vinegar. The "Density" is another physical property, and informs the substance that is made a body is more or less compact: the bodies that have a lot of mass in a small volume, such as gold and platinum, have high density. The small mass bodies that have a large volume, such as styrofoam, cork and the gaseous generally have low density. The density of a body is the ratio of its mass by the volume enclosed by its outer surface. And the ice melting watched? It is to "Melting" another physical property that is passing from solid to liquid. Each material has its melting point characteristic. And the water from the kettle boiling? It is "Boiling" which is the passage of liquid to the gaseous state. It occurs when supply heat to the liquid. Water boils at 100 ° C, when we are at sea level (where the pressure is 1.0 atmosphere). The other substances have boiling points characteristic. Interesting, no? How about we check these properties! ACTIVITY Let's try: Place in a container, preferably made of transparent glass, a little water and salt, and other container some water and sand. Note these two containers and notice their differences. Lyophilized, Dehydrated, desalted
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Kemija Mi obilježit će ove fizikalna svojstva! Kada se šećer otopi u topljivost u vodi je primjer (fizikalno svojstvo) to je sposobnost tvari da raspusti u drugu. Ova sposobnost, što se tiče raspuštanje tijela kod tekućina ograničen, ili postoje maksimalno otopljene tvari koje se mogu rastopiti u određenoj količini otapala. AKTIVNOST Iz onoga što sam studirao o rješenjima, razlikovati supstancije i otapala. Jeste li primijetili da kada se miješati ulje i ocat za salate, ulja sjedi na vrhu octa? To je zato što ulje ima nižu gustoću od octa. "Gustoća" je još fizikalno svojstvo, i informira tvar koja se izgrađuje tijelo je više ili manje kompaktan: tijela koja imaju puno mase u malom volumenu, kao što su zlato i platina, imaju veliku gustoću. Mala masa tijela koja imaju veliki volumen, poput stiropora, pluta i plinovitom obično imaju nisku gustoću. Gustoća tijela je omjer njegove mase po jedinici zatvara svojoj vanjskoj površini. I leda gledali? To je "rastapa" drugu fizičku imovinu koja prelazi iz krutog u tekućini. Svaki materijal ima svoju karakteristiku tališta. A voda iz aparata kipuće? To je "vrenja" koja je prolaz tekućine u plinovito stanje. To se događa kada opskrba topline u tekućinu. Voda vrije na 100 ° C, kada smo na razini mora (gdje je tlak je 1,0 atmosfera). Druge tvari su vrelišta obilježje. Zanimljivo, zar ne? Kako da provjerimo ta svojstva! AKTIVNOST Pokušajmo: Stavite u posudu, po mogućnosti od prozirnog stakla, malo vode i soli, i neke druge posude vode i pijeska. Napomena ta dva kontejnera i primijetiti njihove razlike. Lyophilized, dehidrirano, desalted