5th grade science "Matter, Mixtures, and Solutions"

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Concentration

the amount of solute in a solvent determines this

Chemical Change

occurs when two or more substances are combined and form create a new substance that cannot easily return to its original form

Solution

a type of mixture which has one substance dissolved in another

Solvent

the part of a solution that is in the greatest amount and is usually a liquid

Mixture

two or more substances which are combined but can be taken apart again

Solute

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.

solute

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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