Elements, Compounds and Mixtures Dot Diagram Practice

What is the difference between a compound and a mixture?

• A compound is a physical combination of substances, while a mixture is a chemical combination of elements.

• A compound is a chemical combination of elements, while a mixture is a physical combination of substances.

• A compound consists of two or more elements that can be separated by physical means, while a mixture cannot.

• A compound is a single substance, while a mixture contains only one type of element.

What is an example of an element?

• Oxygen (O)

• Water (H2O)

• Carbon Dioxide (CO2)

• Sodium Chloride (NaCl)

What is an example of a compound?

• Water (H2O)

• Oxygen (O2)

• Hydrogen (H2)

• Helium (He)

What is the dot diagram used for?

• To represent the atomic mass of an element.

• To illustrate the electron configuration of an atom.

• To represent the valence electrons of an atom and how they bond with other atoms.

• To show the physical state of a substance at different temperatures.

What are molecules?

• Single atoms that exist independently.

• Groups of two or more atoms bonded together.

• Particles that cannot bond with others.

• Atoms that are in a gaseous state.

What does it mean for a substance to be heterogeneous?

• A heterogeneous mixture has a uniform composition, meaning it looks the same throughout.

• A heterogeneous mixture has a non-uniform composition, meaning you can see the different parts.

• A heterogeneous mixture is made up of only one type of substance.

• A heterogeneous mixture is always a solid and cannot be a liquid or gas.

What is a compound?

• A substance formed when two or more elements chemically bond together.

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

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

• A solution where one substance is dissolved in another.

What is an element?

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

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

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

• A solution that contains dissolved substances.

Are all compounds also molecules?

• Yes, all compounds are molecules, but not all molecules are compounds.

• No, some compounds are not molecules.

• Only certain types of compounds are molecules.

• All molecules are compounds.

What is a mixture?

• A combination of two or more substances where each substance retains its own properties.

• A substance that cannot be separated into its components.

• A single substance that has uniform composition and properties.

• A chemical reaction between two or more elements.