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Bonds and Mixing Questions - All Grades

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Grade 5 Bonds and Mixing
Bradley mixed together coarse sand, salt, and iron filings in 150 mL of water. Which series of steps will most easily separate out each of the substances?
  1. Heat the solution and filter out the sand and salt.
  2. Filter out the sand and iron filings. Attract the iron with a magnet. Heat and evaporate off the water from the salt.
  3. Attract the iron filings with a magnet. Filter out the salt. Evaporate the water from the coarse sand.
  4. Filter out the salt and attract the iron filings with a magnet.
Grade 7 Bonds and Mixing
A mixture in which the parts appear to be the same throughout is a(n)                    .
  1. mixture
  2. homogeneous mixture
  3. pure substance
  4. computer
Grade 8 Bonds and Mixing
Which substance dissolves another?
  1. solute
  2. solvent
  3. mixture
  4. compound
Grade 7 Bonds and Mixing
The solubility of most solids in water can be increased by                       .
  1. increasing the solvent
  2. increasing temperature
  3. stirring slowly
  4. increasing the solute
Grade 5 Bonds and Mixing
A mixture that is evenly mixed is called                .
  1. homogeneous
  2. heterogeneous
  3. a compound
Grade 8 Bonds and Mixing
A mixture is                     .
  1. 1 substance
  2. 2 or more substances
Grade 8 Bonds and Mixing
An ionic bond is the attraction between                        .
  1. similarly charged ions
  2. oppositely charged ions
  3. neutral ions
  4. neutral atoms
Grade 7 Bonds and Mixing
A very well mixed mixture is a                  .
  1. boiling point
  2. mixture
  3. solution
  4. none of the above
Grade 8 Bonds and Mixing
All methods used to separate a mixture are based on the substances'                    .
  1. chemical properties
  2. physical properties
  3. electric properties
  4. nuclear properties
Grade 6 Bonds and Mixing
Which of the following describes a solution?
  1. A mixture that is partly blended.
  2. A mixture that is evenly blended.
  3. A mixture that has definite layers.
Grade 9 Bonds and Mixing
A solution of two or more metals such as brass is
  1. an alloy.
  2. a heterogeneous mixture.
  3. matter.
  4. a mixture.
Grade 6 Bonds and Mixing
A mixture is a substance
  1. with one type of matter.
  2. that can be evaporated.
  3. with two or more types of matter.
  4. that cannot be separated.
Grade 8 Bonds and Mixing
Solubility is dependent on two things. Which of the following is not one of the two?
  1. Temperature
  2. Pressure
  3. Size
  4. All of the above
Grade 7 Bonds and Mixing
Carbon atoms can join other atoms in a                               .
  1. double bond
  2. triple bond
  3. single bond
  4. single, double, or triple bond
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