Summary

This document is a chemistry exam review. It contains practice questions and answers covering topics such as Bohr-Rutherford diagrams, ion valences, and chemical equations. The document is suitable for secondary school students taking SNC2D chemistry.

Full Transcript

## SNC2D Chemistry Review **Name:** Draw the Bohr-Rutherford diagram for each of the following atoms and determine the valence charge of their ions: - **Sodium:** - [Na] Ion - **Sulfur:** - [S] Ion - **Aluminum:** - [Al]+3 Ion - **Fluorine:** - [F] Ion From your periodic ta...

## SNC2D Chemistry Review **Name:** Draw the Bohr-Rutherford diagram for each of the following atoms and determine the valence charge of their ions: - **Sodium:** - [Na] Ion - **Sulfur:** - [S] Ion - **Aluminum:** - [Al]+3 Ion - **Fluorine:** - [F] Ion From your periodic table/chemistry cheat sheet, what is the valence of each of the following ions? | Ion | Valence | |:-------------------|:--------| | Potassium | +1 | | Oxide | -2 | | Iron (III) | +3 | | Phosphorus | -3 | | Carbonate | -2 | | Ammonium | +1 | | Chloride | -1 | | Silver | +1 | | Hydroxide | -1 | | Sulfate | -2 | | Any alkali metal | +1 | | Any alkaline earth metal| +2 | | Any halogen | -1 | Given the list below, draw a wavy underline beneath those compounds that are acids. Name these compounds. ___ ## Page 2 Draw a double underline beneath those compounds that contain polyatomic ions and look up the formula and valence charge of the ion. Draw a star next to those compounds that contain multivalent metals. Determine the valence charge of the metal based on how it is combining with the negative ion. Write the formula for these compounds. Write the formula for all remaining compounds. | Compound Name | Formula | |:---------------------------------|:-------------------| | calcium hydroxide | Ca(OH)₂ | | sulfuric acid | H₂SO₄ | | strontium nitride | Sr₃N₂ | | methane | CH₄ | | sodium hydroxide | Na(OH) | | calcium carbonate | CaCO₃ | | beryllium phosphide | Be₃P₂ | | carbon monoxide | CO | | lead (II) nitrate | Pb(NO₃)₂ | | lithium bicarbonate | LiHCO₃ | | magnesium chloride | MgCl₂ | | aluminum fluoride | AlF₃ | | copper (I) oxide | Cu₂O | | hydrogen peroxide | H₂O₂ | | nitric acid | HNO₃ | | potassium iodide | KI | | tin (II) sulfide | SnS | | dinitrogen trioxide | N₂O₃ | | water | H₂O | | hydrochloric acid | HCl | | sulfur hexafluoride | SF₆ | | ammonium hydroxide | NH₄OH | What does the (aq) written beside the formula for an acid stand for? What does it mean? **Dissolves in water.** What are four differences between molecular and ionic compounds? - Ionic compounds conduct electricity. - Ionic compounds dissolve in water. - Molecular compounds are two nonmetals. - Ionic compounds are crystal structures. For each of the following skeleton chemical equations, write the word equation and balance the equation: 1. Pb(NO₃)₂ + Na₂SO₄ → PbSO₄ + NaNO₃ **Lead (II) Nitrate + Sodium Sulfate → Lead Sulfate + Sodium Nitrate** ___ ## Page 3 | Reaction | Type | |:-------------------------------------------|:----------------------| | magnesium + oxygen → magnesium oxide | Synthesis | | copper (II) chloride + aluminum → aluminum chloride + copper | Single Displacement | | propane + oxygen → carbon dioxide + water | Combustion | | calcium carbonate calcium oxide + carbon dioxide | Decomposition | | sulfuric acid + sodium hydroxide → sodium sulfate + water | Neutralization | | FeCl₃ + Mg → MgCl₂ + Fe | Single Displacement | | NaN₃ → Na + N₂ | Decomposition | | Mg(OH)₂ + AgNO₃ → Mg(NO₃)₂ + AgOH | Double Displacement | | H₂ + O₂→ H₂O | Synthesis | | CH₄ + O₂ → CO₂ + H₂O | Combustion | Predict the products of each of the following reactions: | Reaction | Products | Type | |:-------------------------------------------------|:-------------------------------------------------|--------------| | magnesium + nitrogen→ | Mg₃N₂ | synthesis | | strontium hydroxide + lead (II) bromide → | SrBr₂ + 2Pb(OH)₂ | | | aluminum iodide + bromine → | AlBr₃ + I₂ | | | hydrochloric acid + sodium hydroxide → | H₂O + NaCl | | | Li + O₂ → | Li₂O | synthesis | | NaCl → | Na + Cl₂ | decomposition| | glucose + oxygen → | CO₂ + H₂O | | | K₂SO₄ + Al→ | Al₂(SO₄)₃ + K | | | CaBr₂ + Ba(NO₃)₂ → | BaBr₂ + Cu(NO₃)₂ | | | C₄H₁₀ + O₂ → | CO₂ + H₂O | | One of the reactions above is the reaction for cellular respiration. Which one? **C₄H₁₀ + O₂ → CO₂ + H₂O ** The opposite reaction is called **photosynthesis**.

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