Acids and Bases Worksheet for 6th - 8th Grade | Lesson Planet - Free Printable

It looks like you've uploaded an image of a worksheet with vocabulary terms related to acids and bases, but the image itself isn't visible in this interface. However, based on your description, I can help you solve the task.

The worksheet appears to have the following vocabulary words listed on the left:

1. Acid
2. Base
3. Neutral
4. Hydronium Ion
5. Hydroxide Ion
6. Alkaline

And on the right, there are blank boxes where students are supposed to write definitions or draw pictures.

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✔ Here’s how to complete the worksheet:

#### 1. Acid
- Definition: A substance that donates hydrogen ions (H⁺) when dissolved in water. Acids turn blue litmus paper red and have a sour taste.
- Example: Lemon juice, vinegar
- Picture idea: Draw a lemon or a bottle labeled "HCl" (hydrochloric acid)

#### 2. Base
- Definition: A substance that accepts hydrogen ions (H⁺) or releases hydroxide ions (OH⁻) in water. Bases turn red litmus paper blue and feel slippery.
- Example: Soap, baking soda
- Picture idea: Draw a bar of soap or a beaker with NaOH

#### 3. Neutral
- Definition: A substance that is neither acidic nor basic; it has a pH of 7.
- Example: Pure water
- Picture idea: Draw a neutral pH scale with 7 in the middle

#### 4. Hydronium Ion
- Definition: A positively charged ion formed when a water molecule gains a hydrogen ion (H⁺). It is written as H₃O⁺.
- Chemical formula: H₃O⁺
- Picture idea: Draw a water molecule (H₂O) with an extra H⁺ attached → H₃O⁺

#### 5. Hydroxide Ion
- Definition: A negatively charged ion consisting of one oxygen and one hydrogen atom (OH⁻), found in bases.
- Chemical formula: OH⁻
- Picture idea: Draw an OH⁻ ion with a negative charge

#### 6. Alkaline
- Definition: Another term for a base; describes solutions that are basic and have a pH greater than 7.
- Example: Ammonia solution
- Picture idea: Draw a beaker with a green liquid and a pH label >7

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📝 Instructions for Completion:

- For each term, write a clear definition in the box.
- Optionally, draw a simple picture or diagram that represents the concept (e.g., a molecule, a test with litmus paper, etc.).

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