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Defend Earth from alien invaders
the amount of solute in a solvent determines this
occurs when two or more substances are combined and form create a new substance that cannot easily return to its original form
a type of mixture which has one substance dissolved in another
the part of a solution that is in the greatest amount and is usually a liquid
two or more substances which are combined but can be taken apart again
the part of a solution that is the lesser amount and is usually a solid
What is matter?
anything that takes up space
What are the three states of matter?
solid, liquid, and gas
give an example of something that is NOT matter
thought or feeling or idea
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.
Name three examples of a chemical change.
rust, burning, photosynthesis
What factors affect the rate of dissolving a substance?
stirring, shaking, heat, crushing
Name three mixtures
Chex Mix, peanuts in milk, different color socks
Name three solutions
chocolate milk, lemonaide, salt water
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.
Describe how the particles move in each state of matter
Solid: Particles vibrate in place
Liquid: Particle are easily able to move past each other
Gas: Particles move wild around unless contained
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