Chapter 3.1 Stoichiometry

Question 1

STOICHIOMETRY

Answer 1

Is the area of study that examines the quantities of substances consumed and produced in chemical reactions

Question 2

It is based on what premise of Dalton’s

Answer 2

Atoms are neither created or destroyed: The Law of Conservation of Mass.

Question 3

How are chemical reactions represented

Answer 3

CHEMICAL EQUATIONS

Question 4

REACTANTS

Answer 4

The chemical formula to the left of the arrow

Question 5

PRODUCTS

Answer 5

the substance produced to the right of the arrow

Question 6

The numbers in front of the formulas

Answer 6

THE COEFFICIENTS : indicate the relative numbers of molecules of each kind involved in the reaction.

There must be an equal number of atoms of each element on each side of the arrow= a balanced equation

Question 7

In a formula

1. Changing the COEFFICIENT changes the
2. Changing the SUBSCRIPT changes the ( NEVER CHANGE THE SUBSCRIPT WHEN BALANCING AN EQUATION)

Answer 7

1. AMOUNT of the molecule 2 (H2O)=2 water

2. IDENTITY H2O2 =1 peroxide