Exploring Basic Chemistry Concepts

What is an element?

• A type of chemical reaction

• An element is a basic building block of matter, consisting of atoms with the same number of protons.

• A mixture of different substances

• A compound made of two or more elements

Define a compound.

• A compound is a mixture of different substances.

• A compound is a single element in its pure form.

• A compound is a type of chemical reaction.

• A compound is a substance made of two or more elements chemically combined.

What is the difference between intensive and extensive properties?

• Intensive properties are independent of the quantity of matter, while extensive properties depend on the quantity of matter.

• Intensive properties depend on the quantity of matter.

• Extensive properties are independent of the quantity of matter.

• Intensive properties are always greater than extensive properties.

Give an example of an intensive property.

• Density

• Mass

• Volume

• Temperature

What is a pure substance?

• A pure substance can contain multiple types of particles.

• A pure substance is a material with a uniform and definite composition, consisting of only one type of particle.

• A pure substance is always a liquid or gas.

• A pure substance has varying composition depending on its environment.

Define a mixture.

• A mixture is a solution that dissolves completely.

• A mixture is a single substance with uniform composition.

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

• A mixture is a chemical reaction between two substances.

What are the two main types of mixtures?

• Simple and complex mixtures

• Natural and artificial mixtures

• Solid and liquid mixtures

• Homogeneous and heterogeneous mixtures

List one separation technique used for mixtures.

• Filtration

• Centrifugation

• Evaporation

• Distillation

What is a chemical property?

• A chemical property is a physical characteristic of a substance.

• A chemical property is a measure of the mass of a substance.

• A chemical property is a characteristic that can be observed without any change.

• A chemical property is a characteristic that can only be observed during a chemical change.

What is a physical property?

• A characteristic that can only be observed through chemical reactions.

• A characteristic of a substance that can be observed or measured without changing its chemical composition.

• A property that requires altering the substance to measure it.

• A method of changing a substance's chemical composition.