8th grade chemistry

Front

What are noble gases?

Back

Noble gases are a group of nonreactive gases found in Group 18 of the periodic table, including helium (He), neon (Ne), argon (Ar), krypton (Kr), xenon (Xe), and radon (Rn).

Front

What is a solute?

Back

A solute is a substance that is dissolved in a solvent to form a solution. In the case of sugar dissolved in water, sugar is the solute.

Front

What are reactants in a chemical equation?

Back

Reactants are the starting substances in a chemical reaction, found on the left side of a chemical equation.

Front

What defines a mixture?

Back

A mixture is a combination of two or more substances that are not chemically bonded and can be physically separated.

Front

What is a compound?

Back

A compound is a substance formed when two or more elements are chemically bonded together, such as sugar (C12H22O11).

Front

What is the periodic table?

Back

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

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What is an element?

Back

An element is a pure substance that cannot be broken down into simpler substances by chemical means, consisting of only one type of atom.

Front

What is a chemical reaction?

Back

A chemical reaction is a process in which substances (reactants) are transformed into new substances (products) through the breaking and forming of chemical bonds.

Front

What is a solvent?

Back

A solvent is a substance that dissolves a solute, resulting in a solution. Water is often referred to as the universal solvent.

Front

What is the difference between a compound and a mixture?

Back

A compound consists of two or more elements chemically bonded together, while a mixture consists of two or more substances that are not chemically bonded.