Chemical Equations

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 are reactants in a chemical equation?

Back

Reactants are the starting substances in a chemical reaction that undergo change.

Front

What are products in a chemical equation?

Back

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

Front

How do you determine the number of atoms in a molecule?

Back

Count the subscripts in the chemical formula; if there is no subscript, it is assumed to be 1.

Front

What does the subscript in a chemical formula indicate?

Back

The subscript indicates the number of atoms of the element in the molecule.

Front

What is the law of conservation of mass?

Back

The law of conservation of mass states that mass is neither created nor destroyed in a chemical reaction.

Front

How many elements are in the compound C6H12O6?

Back

There are 3 elements: Carbon (C), Hydrogen (H), and Oxygen (O).

Front

What is a compound?

Back

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

Front

How many hydrogen atoms are in the molecule 4H2O?

Back

There are 8 hydrogen atoms in 4H2O.

Front

What is the difference between an element and a compound?

Back

An element is a pure substance made of only one type of atom, while a compound is made of two or more different types of atoms chemically bonded.