Exploring Mixtures and Fluids

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Which of the following is NOT a pure substance?

Aluminum foil
Cola (correct)
Baking soda
Distilled water

Which of the following is an example of a heterogeneous mixture?

Muddy water
Homogenized milk
Cola
Chocolate chip cookie (correct)

What is the atomic weight?

The number of electrons in the nucleus
The number of protons in the nucleus
The total positive charge of the atom
The weighted average of all the neutrons and protons in the nucleus (correct)

Which industries require large amounts of cooling water for heat removal?

Electric power generating industries (B) Signup and view all the answers

What is the temperature difference between domestic and municipal sewage and the receiving stream water?

4-8 degrees Celsius higher (D) Signup and view all the answers

According to the particle model of matter, what happens to the movement of particles as temperature decreases?

The movement decreases (D) Signup and view all the answers

Which of the following is true about subatomic particles?

They include protons, neutrons, and electrons (D) Signup and view all the answers

What is the maximum amount of solute that can be dissolved in a fixed volume of solvent at a given temperature called?

Saturation point (B) Signup and view all the answers

Which of the following factors affect solubility?

Type of solute, type of solvent, and temperature (A) Signup and view all the answers

What happens to the solubility of most solutes as temperature increases?

It increases (A) Signup and view all the answers

Match the following types of mixtures with their descriptions:

Heterogeneous Mixture = You can see the different substances that make up the mixture Homogeneous Mixture = Appears as all one substance Mechanical Mixture = Heterogeneous mixture where you can see two or more substances mixed together Solution = Homogeneous mixture where it all appears to be one substance Signup and view all the answers

Match the following terms with their definitions in the context of atomic structure:

Atomic Number = The number of protons in the nucleus, thus the atom's total positive charge Atomic Weight = The weighted average of all the neutrons and protons in the nucleus Proton = A stable particle with a positive + charge Electron = A subatomic particle with a negative charge Signup and view all the answers

Match the following types of mixtures with their examples:

Suspension = Muddy water Colloid = Homogenized milk Solution = Cola Mechanical Mixture = Chocolate chip cookie Signup and view all the answers

Match the following factors with their effects on the rate of dissolving:

Temperature = Increases the rate of dissolving Size of the Pieces = Decreases the rate of dissolving Stirring = Increases the rate of dissolving Pressure = Not mentioned in the text Signup and view all the answers

Match the following substances with their behavior according to the particle model:

Ethanol and Water = When mixed, one fills the spaces between the larger particles of the other Potassium Permanganate = More attracted to water particles than to each other, and dissolves in water Substances in Different States = Every cluster of particles have space between them, regardless of their state Substances at Different Temperatures = As temperature increases, the movement of particles increases Signup and view all the answers

Match the following industries with their heat release into the receiving water:

Electric Power = Requires large amounts of cooling water Textiles, Paper, Pulp, Sugar = Release lesser heat into the receiving water Domestic and Municipal Sewage = Discharge into a running stream, raising the temperature by 4-8 degrees Celsius Chemical Manufacturing = Not mentioned in the text Signup and view all the answers

Match the following terms with their correct definitions:

Solute = The substance that dissolves in a solution Solvent = The substance that does the dissolving in a solution Solubility = The maximum amount of solute that can be dissolved in a fixed volume of solvent at a given temperature Subatomic particles = Particles that are smaller than atoms, such as protons, neutrons, and electrons Signup and view all the answers

Match the following types of solutions with their correct descriptions:

Concentrated solution = A solution that has a large amount of solute in the solvent Diluted solution = A solution that has small amounts of solute in the solvent Saturated solution = A solution in which no more solute can be dissolved in the given volume of solvent at a given temperature Unsaturated solution = A solution in which more solute can be dissolved in the given volume of solvent at a given temperature Signup and view all the answers

Match the following factors with their correct effect on solubility:

Type of Solute = One of the factors that affect solubility Type of Solvent = One of the factors that affect solubility Temperature = One of the factors that affect solubility. For most solutions, solubility increases as temperature increases, but for gases, solubility decreases as temperature increases Particle size = Not mentioned in the text, but can be inferred as a factor that affects solubility Signup and view all the answers

Match the following terms with their correct definitions:

Thermal Pollution = The increase in temperature of a natural body of water caused by human activity Saturated Solution = A solution in which no more solute can be dissolved at a given temperature and pressure Solubility Curve = A graph showing the relationship between the solubility of a solute and the temperature of the solvent Subatomic Particles = Particles that are smaller than atoms, such as protons, neutrons, and electrons Signup and view all the answers