Chemical Rxns & Balancing Equations_PhySci

Front

What are the substances at the beginning of a chemical reaction called?

Back

Reactants

Front

True or False: When balancing chemical equations, the subscripts can be changed.

Back

False

Front

How many molecules are present in the chemical formula 4 C6H12O6?

Back

4

Front

What do subscripts tell us about a chemical formula?

Back

They tell us how many individual atoms are present of the elements they come after.

Front

How many Nitrogen atoms are present in the molecule 3 Na3S4N4?

Back

12

Front

What is a chemical reaction?

Back

A process where reactants transform into products.

Front

What is the law of conservation of mass?

Back

In a chemical reaction, mass is neither created nor destroyed.

Front

What is a product in a chemical reaction?

Back

The substances formed as a result of a chemical reaction.

Front

What is a coefficient in a chemical equation?

Back

A number placed in front of a chemical formula to indicate how many molecules are involved.

Front

What is the purpose of balancing a chemical equation?

Back

To ensure that the number of atoms for each element is the same on both sides of the equation.