Element or Compound?!

Front

What is a compound?

Back

A compound is a pure substance made up of two or more different types of atoms chemically bonded together.

Front

What is an element?

Back

An element is a pure substance that cannot be broken down into simpler substances by chemical means.

Front

Which of the following is a compound: C3, O2, CH3CHO, H2?

Back

CH3CHO is a compound.

Front

What are reactants in a chemical equation?

Back

Reactants are the starting substances that undergo a chemical change.

Front

What are products in a chemical equation?

Back

Products are the substances formed as a result of a chemical reaction.

Front

What is a mixture?

Back

A mixture is a combination of two or more substances that are not chemically bonded.

Front

What is the difference between a compound and a mixture?

Back

A compound is made of two or more elements chemically bonded, while a mixture is a physical combination of substances.

Front

What does the chemical formula H2O represent?

Back

H2O represents water, which is a compound made of hydrogen and oxygen.

Front

What is a chemical equation?

Back

A chemical equation is a symbolic representation of a chemical reaction showing the reactants and products.

Front

What is the significance of the coefficients in a chemical equation?

Back

Coefficients indicate the number of molecules or moles of each substance involved in the reaction.