6th Grade- Mixture Test Review
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Transcript of 6th Grade- Mixture Test Review
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Review for Test
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Mixtures A mixture is a combination of two or
more substances
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MixturesMixtures
Made of elements, compounds or both
Heat or electricity not required for separating the elements
Made using any ratio of the elements
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Heterogeneous Mixtures The different components can be seen
as individual substances.
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Examples of Heterogeneous mixturesSuspensions
A mixture which has large particles which can be seen with the eye
Can be evenly distributed by shaking the contents, but the components will settle out.
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Homogeneous Mixtures Have the same composition throughout The components can’t be seen as
individual particles
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Type of Homogenous Mixtures A solution is a mixture that appears
to be a single substance.
In a solution, the solute is the substance that is dissolved.(Ex:salt, sugar)
The solvent is the substance in which the solute is dissolved in (Ex : liquid)
Remember that the Solvent is the Vast or larger substance” think of the “V” in solvent
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Example of Homogeneous Mixtures Liquid solutions include- Soda,
Gasoline, Tap water. Solutions may also be gases such as air.
Solutions may also be solids, such as steel.
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Colloids Is a mixture in which the particles
are spread throughout but are not large enough to settle out
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Other food colloids include: Examples are (don’t write everything-
just the bold and underlined milk, mayonnaise, butter,
whipped cream
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Methods of Separation of Mixture
Filtering Evaporation Distillation Dissolving
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Soluble and InsolubleInsoluble: The inability of a substance to dissolve in another substance (Ex: Pepper, Sand)
Soluble :the ability of one substance to dissolve within another substance.Ex: Salt , Sugar
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Mass, Volume and Density Notes
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Mass Mass is the amount of matter that makes up an
object.
The SI unit for mass is the gram.
We measure mass with a scale
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Volume
Volume is the amount of space an object consumes.
The unit for volume is the liter.
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Volume of Regular ObjectsVolume of a box would be found by using
Volume = length x width x height.In this case the units would be cubic
centimeters (cm3).So a box 2 cm x 3 cm x 5cm would have a
volume of 30cm3 volume of 30 cm3
2 cm
3 cm
5 c
m
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Volume of Irregular ObjectsWe measure volume of
irregular objects with a graduated cylinder.
This method is called water displacement
The volume of irregular object is in ml (milliliters)
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Water Displacement
Pour 7 ml of water in a graduated cylinder. If a rock causes the level to rise to 9 ml, the rock must have a volume of 2 ml.
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Density Density is the amount of matter (mass) compared
to the amount of space (volume) the object occupies.
Density = mass/volume Unit for density are g/ml or g/cm3
Remember, all fractions are division problems.