Module 4 - Practice Problems
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
|
|
||||
---|---|---|---|---|---|
4.1 Classify the following as either a mixture or a pure substance: (a.) An egg (b.) A gold nugget (c.) A bottle of HNO₃ (d.) Lemonade dissolved in water | (a.) Mixture (b.) Pure substance (c.) Pure substance (d.) Mixture
🗑
|
||||
4.2 Reclassify everything in question #1 as an element, compound, homogeneous mixture, or heterogeneous mixture. | (a.) Heterogeneous mixture (b.) Element (c.) Compound (d.) Homogeneous mixture
🗑
|
||||
4.3 Classify the substances following question #3 on page 132 as physical or chemical changes. | Physical: a, c, e Chemical: b, d
🗑
|
||||
4.4 What is the chemical formula of nitrogen gas? | N₂
🗑
|
||||
4.5 Is the following equation balanced? CaF₂(aq) + 2NH₄Cl (aq) → CaCl₂ (aq) + NH₄F (aq) | No.
🗑
|
||||
4.6 Balance the following equation: HCl (aq) + Zn (s) → ZnCl₂ (aq) + H₂ (g) | 2HCl + Zn → ZnCl₂ + H₂
🗑
|
||||
4.7 In an automobile, nitrogen from the air reacts with oxygen in the engine to make nitrogen monoxide, a toxic pollutant. Write the balanced chemical equation for this reaction. | N₂ + O₂ → 2NO
🗑
|
||||
4.8 Liquid heptene, C₇H₁₀, can react with gaseous hydrogen to make liquid heptane, C₇H₁₆. Write the balanced chemical equation for this reaction. | C₇H₁₀ + 3H₂ → C₇H₁₆
🗑
|
||||
4.9 Balance the following equation: C₇H₁₆ (l) + O₂ (g) → CO₂ (g) + H₂O (g) | C₇H₁₆ (l) + 11O₂ (g) → 7CO₂ (g) + 8H₂O (g)
🗑
|
||||
4.10 Balance the following equation: CO₂ (g) + H₂O (l) → C₁₂H₂₄O₁₂ (s) + O₂ (g) | 12CO₂ (g) + 12H₂O (l) → C₁₂H₂₄O₁₂ (s) + 12O₂ (g)
🗑
|
Review the information in the table. When you are ready to quiz yourself you can hide individual columns or the entire table. Then you can click on the empty cells to reveal the answer. Try to recall what will be displayed before clicking the empty cell.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
Created by:
LiseBrinkley
Popular Chemistry sets