Chapted 7

Question 1

Chemical equation

Answer 1

Represents the substances involved in a chemical reaction

Question 2

Coefficients

Answer 2

Whole numbers integers in front of an element of compound in an equation

Question 3

Steps of balancing

Answer 3

1. Never change the subscripts
2. Start with metals
3. Move to all nonmetallic except oxygen and hydrogen which are balanced last
4. If you are unable to balance the equation chances are the formulas are not written correctly or you have missed a diatomic element
5. Double check to make certain that ALL coefficients can not be reduced

Question 4

In a chemical reaction, atoms are neither created nor destroyed….

Answer 4

So we must make certain there are the same number and type of atoms on both side of the reaction by balancing the equation

Question 5

Chemical reaction

Answer 5

Process that involves changing the way atoms are groups