Pure Substances and Mix 2tures

What is a Mixture?

• A combination of two or more substances that retain their individual properties.

• A single substance with uniform composition.

• A chemical reaction between two or more elements.

• A solution that cannot be separated into its components.

What is a Homogeneous Mixture?

• A mixture that has a uniform composition throughout. Examples include saltwater and air.

• A mixture that contains different substances that are not uniformly distributed.

• A mixture that can be separated into its components by physical means.

• A mixture that has a variable composition and can change over time.

What are Atoms?

• The smallest unit of an element that maintains the properties of that element.

• A type of molecule that contains two or more atoms bonded together.

• A large particle made up of many molecules.

• A form of energy that can be converted into matter.

What is an Element?

• A pure substance that cannot be broken down into simpler substances by chemical means.

• A mixture of two or more substances that can be separated by physical means.

• A compound formed by the chemical combination of two or more elements.

• A solution that contains a solute dissolved in a solvent.

What is an example of a Heterogeneous Mixture?

• A salad

• Saltwater

• Air

• Vinegar

What is a Solvent?

• A substance that is dissolved in a solution.

• The substance in a solution that dissolves the solute. It is usually present in the largest amount.

• A type of chemical reaction.

• A mixture of two or more substances.

What is a Compound?

• A substance formed when two or more elements are chemically bonded together. Examples include water (H2O) and carbon dioxide (CO2).

• A mixture of two or more substances that retain their individual properties.

• A type of element that cannot be broken down into simpler substances.

• A solution where one substance is dissolved in another.

What is a Pure Substance?

• A material that has a constant composition and consistent properties throughout.

• A mixture of different substances that can be separated by physical means.

• A substance that can exist in multiple states, such as solid, liquid, and gas.

• A compound that contains two or more different elements chemically bonded.

What is a Solute?

• The substance that is dissolved in a solution. It is usually present in a smaller amount compared to the solvent.

• A liquid that dissolves a solute.

• A mixture of two or more substances that are not chemically combined.

• A solid that cannot dissolve in any liquid.

What is a Solution?

• A heterogeneous mixture of different substances.

• A homogeneous mixture where one substance (the solute) is dissolved in another (the solvent).

• A pure substance that cannot be separated into simpler substances.

• A mixture that contains only one type of particle.