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)
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