Study Guide for Toxins Mid-Unit Assessment
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Mathematical relationships
o Dimensional Analysis
o Scientific Notation
o Mole Map
Review Lessons, Notes, HW on NB pg. 119-141
o Write a 1-2 sentence summary or Big Idea for each page in a DISTINCT COLOR.
o Interact with the pages. Add new information, make connections, highlight, and use color.
Practice answering questions from HW, Lessons, and Reviews from other sections.
o Rewatch Crash course video: Solutions.
Vocab – on back
o Make a concept map
Work through the following 10 review questions.
Balance the following chemical equations
a. Zn(s) + HCl(aq)  ZnCl2(aq) + H2(g)
b. KClO3(s)  KCl(s) + O2(g)
c. S8(s) + F2(g)  SF6(g)
d. Fe(s) + O2(g)  Fe2O3(s)
For each of the four exercises in Exercise 1, name the type of reaction it represents.
Write the balanced equation for these reactions.
a. Calcium metal reacts with water to form a solution of calcium hydroxide (Ca(OH)2) and hydrogen gas.
b. A solution of hydrochloric acid (HCl) reacts with solid calcium bicarbonate(Ca(HCO3)2) to produce water,
carbon dioxide, and a solution of calcium chloride (CaCl2).
Describe the steps you would follow to make a 1.0M solution of silver nitrate (AgNO3).
a. Do you have to use 1L of water when you make this solution? Explain your reasoning.
How many grams of solute are dissolved in a 500.0 mL sample of 0.50 M sodium sulfate?
Consider a 10 mL water sample from a nearby creek that has a 0.002M lead(II)nitrate, Pb(NO3)2, concentration.
a. How many moles of lead are in this sample?
b. How many lead ions are in this sample?
c. How many grams of lead are in this sample?
d. How many grams of lead ions are in this sample?
Suppose you measure 100 mL each of 1.0M NaOH, 1.0M KCl, and 0.5M PbCl2 solutions.
a. Which has the greatest concentration? Explain.
b. Which has the most mass? Explain/show your work.
c. Which has the most moles? Explain/show your work.
d. Which has the most ions? Explain/show your work.
A mass of 47 g of sulfuric acid, H2SO4, is dissolved in water to prepare a 0.50M solution. What is the volume of
the solution?
Determine the molarity of the solutions created by following each set of directions.
a. Dissolve 7.30 g NaCl to make 500 mL of solution.
b. Dissolve 43.84 g NaCl to make 1L of solution.
c. Dissolve 25.00 g NaCl to make 1L of solution.
d. Dissolve 25.00 g NaCl to make 2L of solution.
How many grams of magnesium sulfate, MgSO4, do you need to make 100 mL of a 0.1M solution?
6.02 x 1023
Decomposition
Representative particle
Aqueous
Dilute
Saturated Solution
Atom
Dimensional Analysis
Scientific Notation
Avogadro’s number
Double Exchange
Single Exchange
Balance Equations
Formula Unit (f.u., ionic)
Solubility
Chemical Change
Heterogeneous Mixture
Solute
Chemical Formula
Homogeneous Mixture
Solution
Chemical Reaction
Interpret
Solvent
Coefficeint
LD50
Subscript
Combination
Molar Mass (g/mole)
Supersaturated solution
Concentration
Molarity (mol/L)
Toxicity
Conservation of mass
Molecule (m-c, covalent)
Types of Reactions
Conversion Factor
Physical Change
Unsaturated solution