Kit 1: Chemistry card set
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Everyday Item Cards
- Soap
- Description: A cleansing agent made from fats or oils and an alkali.
- Common Uses: Cleaning and hygiene.
- Chemistry Highlight: Soap molecules have hydrophobic and hydrophilic ends, allowing them to remove grease and dirt.
- Vinegar
- Description: A liquid containing acetic acid, typically derived from fermentation.
- Common Uses: Cooking, cleaning, and as a natural disinfectant.
- Chemistry Highlight: Acetic acid (CH3COOH) is a weak acid that reacts with bases like baking soda.
- Batteries
- Description: Portable sources of electrical energy stored chemically.
- Common Uses: Powering electronic devices.
- Chemistry Highlight: Electrochemical reactions between anode and cathode produce electric current.
- Baking Soda
- Description: Sodium bicarbonate (NaHCO3), a white powder.
- Common Uses: Baking, cleaning, and deodorizing.
- Chemistry Highlight: Reacts with acids to release carbon dioxide gas.
- Nail Polish Remover
- Description: A solvent, often containing acetone or ethyl acetate.
- Common Uses: Removing nail polish.
- Chemistry Highlight: Acetone (C3H6O) dissolves nail polish by breaking down its polymer structure.
Laminated "Mystery Chemistry Processes" Card Set
- Rusting
- Process: The reaction of iron with oxygen and moisture to form iron oxide (Fe2O3).
- Key Ingredients: Iron, water, oxygen.
- Everyday Example: Rust forming on tools left outside.
- Fermentation
- Process: The breakdown of sugars by microorganisms to produce alcohol and carbon dioxide.
- Key Ingredients: Sugar, yeast, warmth.
- Everyday Example: Bread rising, beer brewing.
- Combustion
- Process: A rapid chemical reaction between a fuel and oxygen, releasing heat and light.
- Key Ingredients: Fuel, oxygen, heat.
- Everyday Example: Burning wood in a fireplace.
- Photosynthesis
- Process: Plants convert carbon dioxide and water into glucose and oxygen using sunlight.
- Key Ingredients: Carbon dioxide, water, sunlight.
- Everyday Example: Green leaves producing oxygen.
- Neutralization
- Process: An acid reacts with a base to produce water and a salt.
- Key Ingredients: Acid, base.
- Everyday Example: Using antacid to relieve heartburn.
- Oxidation
- Process: A substance loses electrons during a chemical reaction.
- Key Ingredients: Oxygen, reactive substance.
- Everyday Example: Apple slices turning brown when exposed to air.
Reference Sheet: Basic Chemistry Concepts
Chemical Reactions:
- Definition: A process where substances (reactants) are transformed into new substances (products).
- Example: H2 + O2 → H2O (formation of water).
Catalysts:
- Definition: Substances that speed up chemical reactions without being consumed.
- Example: Enzymes in biological processes.
Acids and Bases:
- Acids: Substances that donate H+ ions. Example: HCl (hydrochloric acid).
- Bases: Substances that accept H+ ions. Example: NaOH (sodium hydroxide).
pH Scale:
- Definition: A measure of acidity or alkalinity, ranging from 0 (acidic) to 14 (basic). Neutral pH = 7.
- Example: Lemon juice (~2), water (7), bleach (~13).
States of Matter:
- Solid: Fixed shape and volume. Example: Ice.
- Liquid: Fixed volume, variable shape. Example: Water.
- Gas: Variable shape and volume. Example: Steam.
Types of Mixtures:
- Homogeneous: Uniform composition (e.g., saltwater).
- Heterogeneous: Non-uniform composition (e.g., sand and water).
Periodic Table:
- Definition: A chart organizing elements by atomic number, groups, and periods.
- Example: Group 1 elements are alkali metals, highly reactive with water.
Law of Conservation of Mass:
- Definition: Matter is neither created nor destroyed in a chemical reaction.
- Example: Burning wood produces ash, water vapor, and carbon dioxide, with total mass conserved.
Common Separation Techniques:
- Filtration: Separates solids from liquids (e.g., coffee brewing).
- Distillation: Separates substances based on boiling points (e.g., purifying water).
- Magnetism: Extracts magnetic materials (e.g., separating iron from sand).