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Earth's Abundant Elements Quiz

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Questions and Answers

What is a chemical element?

A substance that cannot be made into a simpler form by ordinary chemical means (correct)

A substance that contains only one type of particle and is free from any mixture

A substance that deals with the composition and properties of various elementary forms of matter

A substance made up of two or more elements chemically bound together in a fixed ratio

What are compounds?

Chemical substances made up of two or more elements that are chemically bound together in a fixed ratio (correct)

Substances that contain only one type of particle and are free from any mixture

Substances that cannot be made into a simpler form by ordinary chemical means

Substances that deal with the composition and properties of various elementary forms of matter

What is a pure substance?

Substances that contain only one type of particle and are free from any mixture (correct)

Substances made up of two or more elements chemically bound together in a fixed ratio

Substances that deal with the composition and properties of various elementary forms of matter

Substances that cannot be made into a simpler form by ordinary chemical means

What is the smallest unit of a chemical element?

Atom Signup and view all the answers

What do compounds create when two or more atoms link up?

Molecule Signup and view all the answers

What are the nine elements that make up almost 99% of the Earth's composition?

The nine elements are oxygen, silicon, aluminum, iron, calcium, sodium, potassium, magnesium, and titanium. Signup and view all the answers

Explain how a chemical element is defined.

A chemical element is a substance that cannot be made into a simpler form by ordinary chemical means, and the smallest unit of a chemical element is an atom. Signup and view all the answers

Define compounds and provide an example.

Compounds are chemical substances made up of two or more elements that are chemically bound together in a fixed ratio. An example is water, which is composed of hydrogen and oxygen. Signup and view all the answers

What are pure substances and provide examples?

Pure substances are substances that contain only one type of particle and are free from any mixture. Examples include gold, silver, iron, and aluminum. Signup and view all the answers