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Practice Chem Test 1
Поширений: Worthington
  • 1. Name this anion:
A) carbonate
B) nitrate
C) sulfate
D) hydroxide
  • 2. Ionic bonds involve:
A) atoms sharing electrons to complete the orbitals
B) the metal giving electrons to the non metal to complete the orbitals
  • 3. Name this compound:
A) Natrium Sulfate
B) Sodium Sulfate
C) Sodium Nitrate
D) Natrium Nitrate
  • 4. Cations have this type of charge:
A) Negative
B) Positive
  • 5. A cation which has lost two electrons has this charge:
A) 1-
B) 1+
C) 2-
D) 2+
  • 6. Name this compound:
A) Nitrogen Oxide
B) Dinitrogen trioxide
C) Dinitrogen oxide
D) Nitrogen trioxide
  • 7. In an ionic compounds name the metal elements name:
A) does not change
B) ends in "ide"
  • 8. In an ionic compounds name the non-metal elements name:
A) does not change
B) ends in "ide"
  • 9. Which one is carbon monoxide?
A) IV
B) II
C) III
D) I
  • 10. What are the names of the anions of each of the following in ionic compounds?

    a) Oxygen
    b) Nitrogen
    c) Sulfur
    d) Chlorine
    e) Bromine
    f) Fluorine
    g) Hydrogen
  • 11. Which chemical reaction depends on the activity series of metals?
A) Combustion
B) Combination
C) Decomposition
D) Single Displacement
E) Double Displacement
  • 12. Which chemical reaction depends on the solubility of the products?
A) Decomposition
B) Combustion
C) Combination
D) Single Displacement
E) Double Displacment
  • 13. Which chemical reaction is two or more elements (or compounds) coming together to form one product?
A) Combination
B) Double Displacement
C) Decomposition
D) Single Displacement
E) Combustion
  • 14. Which is true:
A) to balance put a 2 in front of the hydrogen and the water
B) to balance put a 1/2 in front of the oxygen
C) to balance put a 2 after the O in the water molecule
D) this is balanced
  • 15. When balanced what number is in front of the oxygen?
A) 3
B) 4
C) 1
D) 2
  • 16. Explain what "Balanced chemical equation" means and why we must always balance chemical equations
  • 17. How do you find the density of a substance?
A) volume of the substance divided by the mass of the substance
B) mass of substance multiplied by the volume it takes up
C) mass of substance divided by the volume it takes up
D) square the mass and divide by the volume
  • 18. In an experiment the density of water was found to be 1.21g/ml. If the actual density of water is 0.997g/ml what is the percent error?

    (use 3 significant figures)
A) -17.6%
B) -21.4%
C) 21.4%
D) 17.6%
  • 19. Explain the difference between accuracy and precision:
  • 20. Would a piece of copper displace magnesium ions from a solution?
A) Yes
B) No
  • 21. Explain how the activity series of metals works, when deciding if a single replacement reaction will or won't proceed:
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