Chemistry test review Activity 3 & 4
What are 5 uses of Composites?
1. Skin on jets. 2. Rotor blades on helicopters. 3. Bullet proof clothing. 4. Buildings, cars, and boats. 5. Special armor for tanks.
Suspension
A Heterogeneous mixture that contains fine solid or liquid particles in a fluid that will settle out spontaneously. Examples = salt water, vegetable soup, muddy water, milk and cereal, sand in water, and chicken soup.
Emulsion
A colloid or colloidal dispersion of one liquid suspended in another. Examples = oil and water mixtures shaken together, paint, butter and milk, egg yolk, and cream on espresso.
Solution
A homogeneous mixture of two or more substances. The particles are evenly mixed. Examples = salt water solution, rubbing alcohol, sugar dissolved in water, Kool aid and lemonade.
What is another name for a solution?
A homogeneous mixture.
Colloid
A mixture containing particles larger than the solute but small enough to remain suspended in the continuous phase of another component. Examples = milk, butter, jelly, whipped cream, and yogurt.
What are the advantages and disadvantages of using a composite?
Advantage = Leading to stronger materials. Disadvantage = initial cost of research and the use of special raw materials in fabricating the composite.
Laundry detergent (contains white and blue crystals)
Colloid.
Paint for the walls.
Colloid.
How would you tell the difference between a suspension and a colloid.
Depending on the size of particles dictates whether it's a suspension or colloid. Suspension = you can see the substance with the naked eye.
What are the ways that you can separate a mixture? Which type of substances would use for each way?
Evaporation = It is used to separate solutions. Filtration = It is used to separate suspension. Distillation = It is used to separate colloids and emulsions.
Is a solution related to a pure substance? How?
It is related because it can have two or more pure substances.
Laundry detergent (contains white and blue crystals)
Mixture and Heterogeneous.
Muddy water
Mixture and Heterogeneous.
Orange juice (water and pulp)
Mixture and Heterogeneous.
Pizza
Mixture and Heterogeneous.
Soil
Mixture and Heterogeneous.
Brass (Cu mixed with Zn)
Mixture and Homogeneous alloy.
Sugar + Pure water (C12H22+H2O)
Mixture and Homogeneous solution.
Tap water in a glass
Mixture and Homogeneous solution.
Air
Mixture and Homogeneous.
Pacific Ocean (water and salt)
Mixture and Homogeneous.
Salt + Pure water (NaCl + H2O)
Mixture and Homogeneous.
Acetylene (C2H2)
Pure substance and Compound.
Baking soda (NaHCO3)
Pure substance and Compound.
Benzene (C6H6)
Pure substance and Compound.
Limestone (CaCO3)
Pure substance and Compound.
Pure water (H2O)
Pure substance and Compound.
Aluminum (Al)
Pure substance and Element.
Chromium (Cr)
Pure substance and Element.
Iron fillings (Fe)
Pure substance and Element.
Magnesium (Mg)
Pure substance and Element.
A Gold necklace (gold and copper)
Solution.
Benzene (C6H6)
Solution.
Fertilizer that is spread on the lawn.
Solution.
Nail polish remover (C3H6O)
Solution.
Soda pop
Solution.
A compost pile in the backyard for the garden.
Suspension and Heterogeneous.
A mixture of rocks, grass, and metal.
Suspension and Heterogeneous.
A muddy pond
Suspension and Heterogeneous.
Blueberry muffin
Suspension and Heterogeneous.
Cough syrup that must be shaken before it is ingested.
Suspension and Heterogeneous.
Freshly squeezed Orange juice
Suspension and Heterogeneous.
Pizza
Suspension and Heterogeneous.
Spicy salad dressing
Suspension and Heterogeneous.
Which type of mixture will scatter light? Explain the scattering of light.
The Tyndall Effect = The beam of light passes through the Colloid. Colloids and emulsion will scatter the light.
In a salt water solution, identify the solute and solvent?
The water is the solvent and the salt is the solute.
