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Definitions
Mixing Liquids
Solutions
Properties of Water
Testing Powders
100
The study of matter - its properties, composition and changes.
What is CHEMISTRY?
100
The substance that is dissolved in a solution.
What is a SOLUTE?
100
The fastest way to dissolve a lifesaver in water.
What is use hot/BOILING water?
100
The state of matter that water is in when we drink it.
What is LIQUID?
100
Name two liquids that were used to classify and identify powders.
What is VINEGAR and IODINE?
200
A state of matter in which the substance had definite volume but takes the shape of the container.
What is LIQUID?
200
When we dissolved a lifesaver in water, the lifesaver is the solute, and the water is the ______________.
What is SOLVENT?
200
Name a substance that dissolves completely in water.
What is SUGAR, SALT, CITRIC ACID or EPSOM SALTS.
200
We can carefully float a paperclip in a beaker of water because water has this...
What is SURFACE TENSION or strong cohesive forces?
200
This happened when we added iodine to baking powder and cornstarch.
What is a CHEMICAL REACTION or IT TURNED BLUE-BLACK?
300
All of the atoms or molecules may come from a variety of substances. This defines a number of pure substances brought together.
What is a MIXTURE?
300
In a mixture of water, sugar and lemon juice separating the solid from the liquid is most easily accomplished through________________.
What is EVAPORATION of the solvent (water).
300
Name a powder that forms a suspension by floating on top of water.
What is TALC?
300
The shape of water when placed on a piece of wax paper.
What is round and 3D like a balloon?
300
When testing powders with vinegar, the observable chemical reaction was...
What is FOAM?
400
To pour off the top layer without disturbing the layers or the sediment below.
What is DECANTING?
400
When you make a mixture of water and oil, this happens when you leave the mixture over time.
What is SEPARATE (according to density, the more dense liquid will settle to the bottom.)?
400
This technique may be used to recover powders (solutes) from solutions and powders from suspensions.
What is FILTERING (using a coffee filter)?
400
When two drops of water are placed on a piece of wax paper and you blow on them they...
What is join together due to STRONG COHESIVE FORCES.
400
When testing powders with water, the characteristic used to sort the powders was...
What is DISSOLVE or NOT DISSOLVE?
500
A mixture in which very small particles of a solid remain suspended without dissolving.
What is a SUSPENSION?
500
The correct order for layering the following liquids: water, glycerine, alcohol and cooking oil.
What is glycerine, water, cooking oil, alcohol (from first into beaker to last)?
500
A mixture of varying composition such as soil and sand.
What is HETEROGENEOUS MIXTURE?
500
The technical name for water.
What is H2O?
500
When testing a solution with litmus paper, if the paper turns blue we know...
What is a BASE not an ACID?