Chemistry Test Review

 

Part 1: MATTER, ATOMS AND COMPOUNDS

1.  On the periodic table, identify where you find:

 

            a) The alkali metals, the alkaline earth metals, the halogens and the noble gases.

            b) The metals and the non-metals.

            c) Families with an ionic charge of +1, -1, +2, -2, +3, -3, +/-4.

 

3. Which two families are the most reactive?

 

4. Which family is the least reactive?

 

5. a) Draw the Bohr-Rutherford diagram for the element calcium.  Label the following parts: Neutron, proton, electron, orbit, valence electron(s).

 

 

 

 

 

 

b)   Draw the electron dot diagram for calcium.

 

 

 

c)    Write the chemical symbol for the calcium ion.

 

 

d)   Explain WHY the atom forms this ion (Has it gained or lost electrons, and why?)

 

 

 

6.  Label each of the following as either an ionic compound (I) or a molecular compound (M).

            a) CaF₂                       b) C₆H₁₂O₆                 c) CO₂             d) Na₃PO₄

                e) contains a covalent bond                        f) conducts electricity when in water

 

7. How many C, H and O atoms are in the following molecules?

                                                            C                                  H                                 O

a) C₆H₁₂O₆ (sugar)

b) Al(HCO₃)₃

 

8.  Complete the missing names and formulas for the following molecular compounds:

            a) carbon tetrachloride  =  __________________

 

            b) nitrogen trioxide  =  ____________________

 

            c) ________________ = CO₂

 

            d) ________________ = NBr₃

 

9.  Complete the missing names and formulas for the following ionic compounds:

            a) calcium iodide  =  ____________________

 

            b) tin (II) sulfide = ____________________

 

            c) sodium phosphate  =  ____________________

 

            d) ___________________  =  KBr

 

            e) ___________________ = Ca₃P₂

 

            f) ___________________ = CaSO₄

 

Part 2: CHEMICAL REACTIONS

10.  Write the word equation for the reaction of hydrogen peroxide as it breaks down into water and oxygen.

 

11.  State the Law of Conservation of Mass (hint:  it explains why we need to have balanced reactions)

 

 

12. Balance the following chemical equations by placing the appropriate coefficient in the spaces provided

_a)        ______ NaF → ____ Na + ____ F₂

_b)       ___ P + ___ Cl₂ → ___ PCl₅

c)    ___ Al + ___ Fe₂O₃ → ___ Al₂O₃ + ___ Fe

 

13. Identify each of the following types of reactions as either synthesis, decomposition, single displacement or double displacement reactions:

a)    2Ca + O₂ → 2CaO  ___________

b)   AgNO₃ + NaCl → AgCl + NaNO₃  _____________

c)    H₂CO₃ → H₂O + CO₂               ____________

 

Part 3: ACIDS AND BASES

14.  Give the word equation for a neutralization reaction

 

15. Label each of the following as either an acid (A) or base (B).

            a) HCl             b) Sodium hydroxide                       c) NH₄OH           d) H₂CO₃                  e) a sour-tasting substance                  f) reacts with metal                g) pH = 2             h) conducts electricity        i) reacts with protein          j) pH = 8