Revision for Acids and Bases

An acid is a substance that donates protons and a base that accepts protons.

Dilute means it has more water in the formula, and concentrated means it has more acid/base in it.

M

<p>7 &gt; More acidic, 7 - neutral, 7 &lt; More Basic</p> Signup and view all the answers

<p>Alkali</p> Signup and view all the answers

<p>Chemicals</p> Signup and view all the answers

<p>Blue litmus paper</p> Signup and view all the answers

<p>Vinegar, Bleach, Nail remover</p> Signup and view all the answers

<p>Water and salt are created as a by-product and the formula becomes neutral.</p> Signup and view all the answers

<p>Hydrogen and salt are produced.</p> Signup and view all the answers

<p>Acid rain and ocean acidification</p> Signup and view all the answers

<p>Acids donate and bases accept.</p> Signup and view all the answers

<p>The higher the molar the more concentrated the solution is.</p> Signup and view all the answers

<p>Concentrate- 6 water to 4 cordial, dilute- 6 water to 1 cordial.</p> Signup and view all the answers

<p>You read it according to the colors and the left side is acids, the middle more neutral and the right side, bases.</p> Signup and view all the answers

<p>Alkali</p> Signup and view all the answers

<p>The chemicals in the indicators change color according to the concentration of acids and bases.</p> Signup and view all the answers

<p>By using different indicators.</p> Signup and view all the answers

<p>The slight acidity in rain and pollution to the air corrodes some stones/metals/objects/things.</p> Signup and view all the answers

<p>An acid is a substance that releases hydrogen ions into an aqueous solution. A base is a substance that releases hydroxide ions. Bases are caustic and acids are corrosive, both conduct electricity and can cause severe burns.</p> Signup and view all the answers

<p>Molar (M) refers to the concentration of the acid or base. The higher the M the higher the concentration.</p> Signup and view all the answers

<p>Natural chemicals such as cabbage juice contain a chemical called anthocyanin.</p> Signup and view all the answers

<p>Universal indicator, methyl orange, red cabbage juice, bromothymol blue, phenol red, azolitmin, etc.</p> Signup and view all the answers

<p>Acid rain corrodes statues, cement, and other materials able to be corroded.</p> Signup and view all the answers

<p>Acids: are corrosive, taste sour, turn blue litmus paper red; Bases: are neutralized by acids, have a soapy slimy feel, conduct electricity.</p> Signup and view all the answers

<p>Dilute is when there is more water and less substance. Concentrate is when there is less water and more substance.</p> Signup and view all the answers

<p>The solution changes color and the pH can be worked out by comparing the color of the solution to the pH chart.</p> Signup and view all the answers

<p>True</p> Signup and view all the answers

<p>Ocean acidification, weakens trees' natural defense and removes soil nutrients like calcium and magnesium.</p> Signup and view all the answers

<p>The solution neutralizes and becomes neutral with a pH level of 7.</p> Signup and view all the answers

<p>Protons! Strong acids produce many protons whereas weaker acids produce very little.</p> Signup and view all the answers

<p>Beaker A would be more diluted as there would be less acid molecules in the solution compared to beaker B.</p> Signup and view all the answers

<p>The concentration increases by 10 every number you move down the pH scale.</p> Signup and view all the answers

<p>Red cabbage, blueberries, carrots, grapes, etc.</p> Signup and view all the answers

<p>Acid rain can destroy man-made sculptures, but it can also destroy forests and ecosystems.</p> Signup and view all the answers

<p>Acid rain is caused by pollution and damages the environment.</p> Signup and view all the answers

<p>Acids and bases both conduct electricity and are neutralized by each other, producing water and a salt. Acids are substances that donate protons, are corrosive, and have a sour taste, while bases are substances that accept protons, are caustic, and have a soapy feel.</p> Signup and view all the answers

<p>Molar (M) applies to the concentration of a substance; the higher the M is, the more concentrated the substance is.</p> Signup and view all the answers

<p>Substances matching to the color of pH 7 are neutral; those matching to more than 7 are basic and less than 7 are acidic.</p> Signup and view all the answers

<p>pH indicators are chemicals that indicate the concentration of H+ ions in a solution via color change.</p> Signup and view all the answers

<ol> <li>Methyl orange, 2. Universal indicator, 3. Litmus paper, 4. Phenolphthalein.</li> </ol> Signup and view all the answers

<p>Acids: 1. Apples, 2. Bananas, 3. Tea; Bases: 1. Cement, 2. Antacids, 3. Washing powders.</p> Signup and view all the answers

<p>Marine organisms that use calcium carbonate for their shells will be in danger because increased acidity will dissolve their shells.</p> Signup and view all the answers