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What are elements?

Back

Elements are pure substances that cannot be broken down into simpler substances by chemical means.

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What is a compound?

Back

A compound is a substance formed when two or more elements are chemically bonded together.

Front

What is the periodic table?

Back

The periodic table is a tabular arrangement of elements, organized by increasing atomic number, that shows the relationships between them.

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What are subatomic particles?

Back

Subatomic particles are the smaller particles that make up an atom, including protons, neutrons, and electrons.

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What is a neutral atom?

Back

A neutral atom is an atom with an equal number of protons and electrons, resulting in no overall charge.

Front

What is the significance of the atomic number?

Back

The atomic number represents the number of protons in an atom and determines the element's identity.

Front

What is the difference between a mixture and a compound?

Back

A mixture is a physical combination of substances that can be separated, while a compound is a chemical combination that cannot be separated by physical means.

Front

What is cellular respiration?

Back

Cellular respiration is the process by which cells convert glucose and oxygen into energy, producing carbon dioxide and water as byproducts.

Front

What are noble gases?

Back

Noble gases are a group of elements in Group 18 of the periodic table that are characterized by their lack of reactivity due to having a full valence shell.

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What is the role of electrons in an atom?

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Electrons are negatively charged particles that orbit the nucleus of an atom and are involved in chemical bonding.