Download Define matter

Name__________________________________________________Period____________
CHEMISTRY REVIEW
UNIT 2 – DESCRIBING MATTER
Compare the states of matter by filling in the table.
Solid
Liquid
Shape
Volume
Molecular movement
Molecular attraction
Distance between molecules
Compressibility
State of most metals
State of nonmetals
Gas
Plasma
Use the data table to answer the questions below.
Substance
Melting Point (oC)
Boiling Point (oC)
Water
Mercury
Oxygen
0
-39
-219
100
357
-183
1. Which substances are solid at -273oC?
2. Which substances are liquid at 50oC?
3. Which substances are gases at 300oC?
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Define the following terms:
1. Matter
2. Homogeneous
3. Heterogeneous
4. Phase
5. Solution
Give an example of something measureable that is NOT matter. ____________________
Check each choice that is always true.
Pure
Substance
Is homogeneous
Is heterogeneous
Can be separated into 2 or more
substances
Can be separated by physical means
Has properties different than its
components
Has 2 or more elements chemically
combined
Has variable composition
Distilled water
Snicker’s bar
Element
Compound
Mixture
Label each part of the diagram as an element, compound, or mixture.
Explain how each separation technique is used and identify it as physical or chemical.
How it is used
Separation technique
Physical
Chemical
Distillation
Centrifugation
Heating
Filtration
Evaporation
Name four indicators of a chemical change.
1.
3.
2.
4.
Define and give an example of the following.
1. Physical property
2. Chemical property
3. Physical change
4. Chemical change
DENSITY PROBLEMS: Solve using dimensional analysis, show all work including units
1. What volume; in cm3, of silver metal will have a mass of 25.00 dg? The density of silver is 10.5 g/cm3.
2. Find the mass, in grams, of 0.250 L of benzene, a liquid solvent. The density of benzene is 0.90 g/mL.
3. Ethyl alcohol is added to a beaker with mass 204.88 g until the beaker and alcohol together weigh 253.2 g.
What volume, in cL, was added to the beaker? The density of ethyl alcohol is 0.789 g/mL.