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GOB Chemistry: Chapter 1 - Chemistry in Our Lives

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Terms in this set (16)

  • What is chemistry?

    Chemistry is the study of the composition, structure, properties, and reactions of matter.

  • What is matter?

    Matter is all substances that make up our world, including solids, liquids, and gases.

  • Define chemicals.

    Chemicals are substances with the same composition and properties wherever found, often made by chemists and used daily.

  • Give examples of matter from everyday life.

    Examples include antacid tablets, water, glass, and air.

  • What role does hemoglobin play in the blood?

    Hemoglobin transports oxygen to tissues and carbon dioxide to the lungs.

  • What happens when an antacid tablet is dropped into water?

    The antacid tablet undergoes a chemical reaction with water.

  • Do sunlight and fruit contain chemicals?

    Sunlight is energy and does not contain chemicals; fruit is matter and contains chemicals.

  • Does milk contain chemicals?

    Milk is a type of matter and contains chemicals.

  • Does breakfast cereal contain chemicals?

    Breakfast cereal is matter and contains chemicals.

  • What is toothpaste composed of?

    Toothpaste is a combination of many chemicals with specific functions.

  • What is the function of calcium carbonate in toothpaste?

    Calcium carbonate is used as an abrasive to remove plaque.

  • What does sorbitol do in toothpaste?

    Sorbitol prevents loss of water and hardening of toothpaste.

  • What is the role of sodium lauryl sulfate in toothpaste?

    Sodium lauryl sulfate is used to boost plaque removal.

  • What does titanium dioxide do in toothpaste?

    Titanium dioxide makes toothpaste white and opaque.

  • What is the function of sodium fluorophosphate in toothpaste?

    Sodium fluorophosphate prevents formation of cavities by strengthening tooth enamel.

  • What does methyl salicylate add to toothpaste?

    Methyl salicylate gives toothpaste a pleasant wintergreen flavor.