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occurs when two or more substances are combined and form create a new substance that cannot easily return to its original form
Describe the properties of solids
Close, tightly packed particles. Definite shape and volume. Does not flow. Particles vibrate in place.
Describe the properties of liquids
Particles move but are relatively close. Shape is like container. Definite volume. Flows. Particles move freely
Describe the properties of gases
Particles are far apart. Expand to fit the container they are in. Move wildly
Name six ways to separate mixtures? (Provide one example for each technique.)
1. sifting (sand and shells) 2. coffee filter (liquid and marbles) 3. sort by hand (red socks and blue socks) 4. sit and settle out (oil and water Italian dressing) 5. magnetic attraction (iron in iron fortified cereal) 6. chromatography (marker on tissue paper)
If you would like to concentrate a solution, then you must add more ____________ to the solution.
Explain why the following statement is true: All solutions are mixtures, but not all mixtures are solutions.
A solution is a type of mixture where one substance is dissolved in another but a mixture is just a combination of items
Describe how particles are spaced in each state of matter.
solid: tight, closely packed particles.
Liquid: loose, flowing particles.
Gas: randomly moving particles.
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