A qualitative data is a data that cannot be quantified: for example gender, food preference and country. You can't measure the average, but you can measure the frequency of the data.
How she will organize it depends on the specific data, but in some cases (e.g.: food preference, party preference,favourite class) a pie chart might be a good idea.
Spoilage is basically a chemical reaction and chemical reactions take place more slowly if the environment is cooler. Moreover, the microbes are also not very active at lower temperatures and are unable to spoil the food.
If a solution process is exothermic, the energy required for dissolving the solute compare with the energy released is that, the energy requiredis less than the energy released. When we sayexothermic, heat is evolved. On the other hand,when heat is absorbed, this is called endothermic.
Explanation:
When iron gets in contact with oxygen (or water, which also contains oxygen) it starts giving electrons to the oxygen atoms, in a process called oxidisation, and when that occurs, iron oxide (
) is made.
Note: iron oxide is what we call rust. And, iron is so easy to rust because it usually isn't mixed with any other protective metals or covered in protective films.
Hope it helped,
BiologiaMagister