Physical Changes- does not change the substance (you can get it back)
Chemical Changes- changes the substances. You end up with something completely different (You can't get it back)
*INDICATORS*
- if a new color is represented from the substance
- if a new smell is apparent
- heat lost/ absorbed
- if it gives of some sort of light
- precipitat formed
- gases evovle or given off
I have learned of mixtures and how you only can recieve distallation, manual seperation, filration, decanting,or magnetic seperation from this.
Distallation- seperation of liquids by boiling one off
Manual Seperation- when you pick out the substance with tweezers or tongs
Filtration- seperating a liquid from a powder or fine solid (an example of this is how you filter water through coffee)
Decanting- Pouring off a liquid (example: mix gravel and water together, then you can pour the water from the gravel)
Magnetic Seperation- using a magnet to seperate diamagnetic substance.
A pure substance has to be seperated through a chemical process (example: seperation of atoms). The only was to do this is through electrolysis.
Electrolysis means you use electricity to break apart a substance (example: water)
In this chapter, we have learned of elements, compounds, homogeneous mixture, and heterogeneous mixture.
Elements can be seperated physically or chemically
Compound is two or more elemnts that are bound together and can't be seperated through physical process.
(These elements are combined in whole ratios)
Homogeneous Mixtures and Heterogeneous Mixtures have similarities but differences as well.
They are different from Homogeneous Mixtures being the same throughout and presenting:
a Solution- liquid homogeneous mixture
a Alloy- homogeneous mixture of metals
Heterogeneous Mixtures are different throughout.
This chapter has refreshed my memory of elements, mixtures, and solutions. But also has shown me advancements of each one.
