Mixtures

What is a mixture?

• A mixture is a combination of two or more substances that are not chemically bonded.

• A mixture is a single substance made from one type of molecule.

• A mixture is a chemical reaction between two or more elements.

• A mixture is a solution where one substance is dissolved in another.

What are elements and compounds?

• Elements are substances that can be broken down into simpler substances, while compounds are pure substances.

• Elements are pure substances that cannot be broken down into simpler substances, while compounds are substances formed when two or more elements are chemically bonded.

• Elements are mixtures of different substances, while compounds are single substances.

• Elements are always gases, while compounds can be solids, liquids, or gases.

What is the process of separating mixtures called?

• Separation techniques

• Combination methods

• Synthesis processes

• Homogenization techniques

What are examples of mixtures?

• Soil, water, soup, air, and salad

• Pure water and salt

• Gold and silver

• Oxygen and nitrogen

What is an example of a homogeneous mixture?

• Vinegar

• Sand and salt

• Oil and water

• Fruit salad

What is a solution?

• A heterogeneous mixture of substances.

• A homogeneous mixture where one substance is dissolved in another.

• A type of chemical reaction.

• A solid substance that cannot dissolve in any liquid.

What happens when you mix dirt and water?

• The dirt will dissolve completely in the water, creating a homogeneous solution.

• The dirt will settle to the bottom, creating a heterogeneous mixture.

• The water will evaporate, leaving the dirt behind as a solid.

• The dirt will float on the surface of the water, forming a layer.

What is chromatography?

• A technique used to separate components of a mixture based on their movement through a stationary phase.

• A method for measuring the pH of a solution.

• A process for distilling liquids at different boiling points.

• A technique for analyzing the electrical conductivity of materials.

What is a heterogeneous mixture?

• A mixture that has a uniform composition, such as saltwater.

• A mixture that has a non-uniform composition, such as a salad or a mixture of sand and iron filings.

• A mixture that cannot be separated by physical means, such as a compound.

• A mixture that contains only one type of substance, such as pure water.

What is an example of a heterogeneous mixture?

• A bowl of cereal with milk.

• Saltwater solution.

• Air in a balloon.

• Sand and sugar mixture.