Chemistry and Matter Terminology Quiz

Questions and Answers

What is a compound?

A physical combination of two or more substances

A chemical combination of two or more substances (correct)

A homogeneous mixture

An element made of only one substance

What is an element?

A mixture of various substances

Substances that are physically combined

A substance made up of only one kind of atom (correct)

A compound that can be broken down into simpler substances

What is a mixture?

An element made of one substance

A chemical combination of two or more elements

A homogeneous substance

A physical combination of two or more substances (correct)

What defines a heterogeneous mixture?

The composition of the mixture is not uniform. Signup and view all the answers

What is a colloid?

A heterogeneous mixture with medium-sized particles that scatter light. Signup and view all the answers

What is a suspension?

A heterogeneous mixture with large particles that can settle. Signup and view all the answers

List three differences between a compound and a mixture.

<ol> <li>Compounds are a chemical combination, mixtures are physical. 2. Compounds do not retain identities, mixtures do. 3. Compounds require chemical means to separate, mixtures can be physically separated.</li> </ol> Signup and view all the answers

List three differences between a compound and an element.

<ol> <li>Compounds are formed from two or more elements, elements are made of one type. 2. Compounds can be decomposed, elements cannot. 3. Compounds have definite ratios, elements do not depend on ratios.</li> </ol> Signup and view all the answers

Give three examples of a heterogeneous mixture.

Milk, paint, and a rock. Signup and view all the answers

Give three examples of a homogeneous mixture.

Apple juice, rubbing alcohol, soda. Signup and view all the answers

What is a solution?

A homogeneous mixture with very small particles that do not settle. Signup and view all the answers

What defines a homogeneous mixture?

The composition of the mixture is uniform. Signup and view all the answers

Study Notes

Chemistry and Matter Terminology

Compound: Formed through a chemical combination of two or more substances.
Element: A substance made exclusively of one type of atom; examples include Carbon, Oxygen, and Neon.
Mixtures: Created from a physical combination of two or more substances.

Types of Mixtures

Heterogeneous Mixtures: Composition is not uniform; can be further categorized as colloids or suspensions.
Colloid: Contains medium-sized particles, exhibits the Tyndall effect (scattering light), and particles remain suspended. Example: milk.
Suspension: Composed of larger particles, also displays the Tyndall effect, but particles eventually settle out. Example: fresh-squeezed lemonade.

Differences between Compounds and Mixtures

Chemical vs. Physical Combination: Compounds arise from a chemical combination, while mixtures involve physical combinations of substances.
Identity Retention: Compounds do not retain the identities of the original components; mixtures preserve the properties of their individual substances.
Separation Methods: Compounds can only be separated through chemical means; mixtures can be separated physically.

Differences between Compounds and Elements

Composition: Compounds consist of two or more elements; elements contain only one type of atom.
Decomposition: Compounds can be chemically decomposed; elements cannot be broken down further.
Formation Ratio: Compounds form in a definite ratio; the formation of elements does not depend on specific ratios.

Examples of Mixtures

Heterogeneous Mixtures: Include milk, paint, and rocks.
Homogeneous Mixtures: Examples consist of apple juice, rubbing alcohol, and soda.

Solutions

Solution: A type of homogeneous mixture with very small particles that do not scatter light (no Tyndall effect) and do not settle. Example: rubbing alcohol.
Homogeneous Mixture: The composition is uniform throughout and is also referred to as a solution.

Description

Test your knowledge on the fundamental terms in chemistry related to compounds, elements, and mixtures. This quiz covers the differences between heterogeneous mixtures, colloids, and suspensions, as well as the nature of chemical and physical combinations. Challenge yourself and enhance your understanding of matter in chemistry!