Elements, Compounds, and Mixtures/Balancing Equations

Front

What is a compound?

Back

A compound is a substance formed when two or more elements chemically bond together in a fixed ratio.

Front

What is a mixture?

Back

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

Front

What distinguishes an element from a compound?

Back

An element is a pure substance that cannot be broken down into simpler substances, while a compound consists of two or more elements chemically combined.

Front

What is the definition of an atom?

Back

An atom is the smallest unit of an element that retains the properties of that element.

Front

What is the difference between homogeneous and heterogeneous mixtures?

Back

Homogeneous mixtures have a uniform composition throughout, while heterogeneous mixtures have distinct, separate components.

Front

Can compounds be separated into their constituent elements?

Back

Yes, compounds can be separated into their constituent elements through chemical reactions.

Front

What is the law of conservation of mass in relation to chemical reactions?

Back

The law of conservation of mass states that mass is neither created nor destroyed in a chemical reaction; the total mass of reactants equals the total mass of products.

Front

What is a chemical equation?

Back

A chemical equation is a symbolic representation of a chemical reaction, showing the reactants and products along with their quantities.

Front

What is the role of coefficients in balancing chemical equations?

Back

Coefficients are used to indicate the number of molecules or moles of a substance in a chemical equation, helping to balance the equation.

Front

What is an example of a simple compound?

Back

Water (H2O) is an example of a simple compound, consisting of two hydrogen atoms and one oxygen atom.