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1. The simplest chemical substances are composed of only _____ type(s) of atom.0123

2. Compounds can only be separated into their component elements by _____.

  • breaking chemical bonds
  • removing impurities
  • breaking element bonds

3. A _____ is composed of visibly distinguishable parts and does not have uniform composition.

  • homogeneous mixture
  • heterogeneous mixture

4. _____ is an example of a homogeneous mixture.

  • Apple juice
  • Oil and vinegar dressing

5. In salt water, water (H2O) is the _____ and salt (NaCl) is the _____.

  • solute; solvent
  • solvent; solute

6. When both a solute and solvent are solids, they are said to be either miscible or immiscible.

  • True
  • False

7. Solubility is described in terms of both concentration and temperature.

  • True
  • False

8. _____ is a kinetic process defined by rate, and is not specific to concentration.

  • Solubility
  • Dissolution
  • Miscible

9. Chemists have developed the general rule "like dissolves like" for determining solubility.

  • True
  • False

10. Consider two substances: Substance A is soluble in a range of temperatures and Substance B is only soluble in hot water. When temperature is low and the two are mixed together, they will most likely creates _____ mixture; when temperature is high and two are mixed together, they will most likely creates _____ mixture.

  • homogeneous; heterogeneous
  • heterogeneous; homogeneous

11. A sample of solid iron and sand can be most easily separated using a _____.

  • piece of tape
  • magnet
  • bare hand

12. To calculate the percent of a total mixture, divide the mass of _____ by the mass of _____ and multiply by 100%.

  • one substance; the mixture of solids
  • the mixture of solids; one substance

13. Salt and benzoic acid in an aqueous solution can be separated with ice and filter paper.

  • True
  • False
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Subject: Chemistry, Science
The simplest chemical substances are composed of only _____ type(s) of atom. 0 1 2 3 2. Compounds can only be separated into their component...
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