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Page 1 Item Acid or Base? Lemon juice Baking soda Vinegar Soap Toothpaste Bleach Milk Acids and Bases Worksheet Name: _____________________ Date: ______________________ Part 2: Identifying Acids and Bases Part 1: Key Terms and Definitions 1. A substance with a pH lower than 7 is called an __________. 2. A substance with a pH higher than 7 is known as a __________. 3. The __________ is a scale that measures how acidic or basic a substance is. 4. When a substance is neither acidic nor basic, it is called __________. 5. __________ is a special paper used to test whether a substance is an acid or a base. Look at the common household items listed below. Identify each as an acid or a base. Identify the key term defined in the descriptions: acid, base, neutral, pH scale, or litmus paper. Page 2 Item Acid or Base? Lemon juice Baking soda Vinegar Soap Toothpaste Bleach Milk Acids and Bases Worksheet Name: _____________________ Date: ______________________ Part 2: Identifying Acids and Bases Part 1: Key Terms and Definitions 1. A substance with a pH lower than 7 is called an __________. 2. A substance with a pH higher than 7 is known as a __________. 3. The __________ is a scale that measures how acidic or basic a substance is. 4. When a substance is neither acidic nor basic, it is called __________. 5. __________ is a special paper used to test whether a substance is an acid or a base. Look at the common household items listed below. Identify each as an acid or a base. Identify the key term defined in the descriptions: acid, base, neutral, pH scale, or litmus paper. Item pH Scale Pure water Battery acid Household bleach Soft drinks Toothpaste Hand soap Acids and Bases Worksheet Name: _____________________ Date: ______________________ Part 4: The pH Scale Part 3: Properties of Acids and Bases 1. Tastes sour: ______________. 2. Turns red litmus paper blue: ______________. 3. Tastes bitter: ______________. 4. Turns blue litmus paper red: ______________. 5. Feels slippery to the touch: ______________. The pH scale ranges from 0 to 14, with 7 being neutral. Below is a pH scale. Write the appropriate number in the blank next to each substance. Match the properties with either acid or base: Page 3 Item Acid or Base? Lemon juice Baking soda Vinegar Soap Toothpaste Bleach Milk Acids and Bases Worksheet Name: _____________________ Date: ______________________ Part 2: Identifying Acids and Bases Part 1: Key Terms and Definitions 1. A substance with a pH lower than 7 is called an __________. 2. A substance with a pH higher than 7 is known as a __________. 3. The __________ is a scale that measures how acidic or basic a substance is. 4. When a substance is neither acidic nor basic, it is called __________. 5. __________ is a special paper used to test whether a substance is an acid or a base. Look at the common household items listed below. Identify each as an acid or a base. Identify the key term defined in the descriptions: acid, base, neutral, pH scale, or litmus paper. Item pH Scale Pure water Battery acid Household bleach Soft drinks Toothpaste Hand soap Acids and Bases Worksheet Name: _____________________ Date: ______________________ Part 4: The pH Scale Part 3: Properties of Acids and Bases 1. Tastes sour: ______________. 2. Turns red litmus paper blue: ______________. 3. Tastes bitter: ______________. 4. Turns blue litmus paper red: ______________. 5. Feels slippery to the touch: ______________. The pH scale ranges from 0 to 14, with 7 being neutral. Below is a pH scale. Write the appropriate number in the blank next to each substance. Match the properties with either acid or base: Item Acid or Base? Lemon juice Acid Baking soda Base Vinegar Acid Soap Base Toothpaste Base Bleach Base Milk Acid Acids and Bases Worksheet Name: _____________________ Date: ______________________ Part 2: Identifying Acids and Bases Part 1: Key Terms and Definitions 1. A substance with a pH lower than 7 is called an __________. 2. A substance with a pH higher than 7 is known as a __________. 3. The __________ is a scale that measures how acidic or basic a substance is. 4. When a substance is neither acidic nor basic, it is called __________. 5. _____________ is a special paper used to test whether a substance is an acid or a base. Look at the common household items listed below. Identify each as an acid or a base. Identify the key term defined in the descriptions: acid, base, neutral, pH scale, or litmus paper. Answer Key Acid Base pH scale Neutral Litmus paper Page 4 Item Acid or Base? Lemon juice Baking soda Vinegar Soap Toothpaste Bleach Milk Acids and Bases Worksheet Name: _____________________ Date: ______________________ Part 2: Identifying Acids and Bases Part 1: Key Terms and Definitions 1. A substance with a pH lower than 7 is called an __________. 2. A substance with a pH higher than 7 is known as a __________. 3. The __________ is a scale that measures how acidic or basic a substance is. 4. When a substance is neither acidic nor basic, it is called __________. 5. __________ is a special paper used to test whether a substance is an acid or a base. Look at the common household items listed below. Identify each as an acid or a base. Identify the key term defined in the descriptions: acid, base, neutral, pH scale, or litmus paper. Item pH Scale Pure water Battery acid Household bleach Soft drinks Toothpaste Hand soap Acids and Bases Worksheet Name: _____________________ Date: ______________________ Part 4: The pH Scale Part 3: Properties of Acids and Bases 1. Tastes sour: ______________. 2. Turns red litmus paper blue: ______________. 3. Tastes bitter: ______________. 4. Turns blue litmus paper red: ______________. 5. Feels slippery to the touch: ______________. The pH scale ranges from 0 to 14, with 7 being neutral. Below is a pH scale. Write the appropriate number in the blank next to each substance. Match the properties with either acid or base: Item Acid or Base? Lemon juice Acid Baking soda Base Vinegar Acid Soap Base Toothpaste Base Bleach Base Milk Acid Acids and Bases Worksheet Name: _____________________ Date: ______________________ Part 2: Identifying Acids and Bases Part 1: Key Terms and Definitions 1. A substance with a pH lower than 7 is called an __________. 2. A substance with a pH higher than 7 is known as a __________. 3. The __________ is a scale that measures how acidic or basic a substance is. 4. When a substance is neither acidic nor basic, it is called __________. 5. _____________ is a special paper used to test whether a substance is an acid or a base. Look at the common household items listed below. Identify each as an acid or a base. Identify the key term defined in the descriptions: acid, base, neutral, pH scale, or litmus paper. Answer Key Acid Base pH scale Neutral Litmus paper Item pH Scale Pure water 7 Battery acid 1 Household bleach 12 - 13 Soft drinks 3 Toothpaste 7 - 10 Hand soap 9 - 10 Acids and Bases Worksheet Name: _____________________ Date: ______________________ Part 4: The pH Scale Part 3: Properties of Acids and Bases 1. Tastes sour: ______________. 2. Turns red litmus paper blue: ______________. 3. Tastes bitter: ______________. 4. Turns blue litmus paper red: ______________. 5. Feels slippery to the touch: ______________. The pH scale ranges from 0 to 14, with 7 being neutral. Below is a pH scale. Write the appropriate number in the blank next to each substance. Match the properties with either acid or base: Answer Key Acid Base Base Base AcidRead More
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FAQs on Visual Worksheet: Acids and Bases (with Solutions) - Worksheets with solutions for Class 7
| 1. What are the properties of acids and bases? |  |
Ans. Acids are substances that taste sour, turn blue litmus paper red, and can conduct electricity in solution. They typically release hydrogen ions (H+) when dissolved in water. Bases, on the other hand, taste bitter, feel slippery, turn red litmus paper blue, and also conduct electricity. They release hydroxide ions (OH-) in solution.
| 2. How can we identify an acid and a base using indicators? | |
Ans. Indicators are substances that change color in response to acids or bases. For example, litmus paper changes from blue to red in acidic solutions and from red to blue in basic solutions. Other common indicators include phenolphthalein, which turns pink in basic solutions, and methyl orange, which turns red in acidic solutions.
| 3. What is the pH scale and what does it indicate? | |
Ans. The pH scale ranges from 0 to 14 and measures the acidity or alkalinity of a solution. A pH less than 7 indicates an acid, a pH of 7 is neutral (like pure water), and a pH greater than 7 indicates a base. The scale is logarithmic, meaning each whole number change represents a tenfold difference in acidity or alkalinity.
| 4. What are some common examples of acids and bases found in everyday life? | |
Ans. Common acids include vinegar (acetic acid), citrus fruits (citric acid), and battery acid (sulfuric acid). Everyday bases include baking soda (sodium bicarbonate), soap (which can contain various bases), and ammonia (ammonium hydroxide). These substances are often used in cooking, cleaning, and various household products.
| 5. Why are acids and bases important in our daily lives? | |
Ans. Acids and bases play crucial roles in various aspects of everyday life. They are essential in cooking, cleaning, and even in our bodies (like stomach acid aiding digestion). Additionally, they are involved in many industrial processes, environmental science (like acid rain), and in maintaining pH balance in ecosystems.
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