Chemistry Review

Front

What is the atomic number of an element?

Back

The atomic number is the number of protons in the nucleus of an atom, which determines the element's identity.

Front

How do you determine the number of protons in an atom?

Back

The number of protons in an atom is equal to its atomic number.

Front

What is a coefficient in a chemical equation?

Back

A coefficient indicates the number of molecules of a substance involved in a reaction.

Front

What is the law of conservation of mass?

Back

The law states that mass is neither created nor destroyed in a chemical reaction; it is conserved.

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Front

What is the formula for carbon monoxide?

Back

The formula for carbon monoxide is CO.

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Front

How do you calculate the mass of products in a chemical reaction?

Back

You can calculate the mass of products using the masses of the reactants and applying the law of conservation of mass.

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Front

What is the difference between an atom and a molecule?

Back

An atom is the smallest unit of an element, while a molecule is a group of two or more atoms bonded together.

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Front

What is the significance of valence electrons?

Back

Valence electrons determine how an atom can bond with other atoms.

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Front

What is the periodic table?

Back

The periodic table is a tabular arrangement of elements organized by increasing atomic number and grouped by similar properties.

Front

What is a chemical reaction?

Back

A chemical reaction is a process that leads to the transformation of one set of chemical substances to another.

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