Review

8.5 DF Chemical Formulas and Equations

How many different elements are represented in the chemical formula

Ca(ClO3)2

3Calcium, Chlorine, Oxygen

What is the chemical formula for Potassium Chloride?

KCl

2KCl shows 2 molecules of Potassium Chloride, how many total atoms of Chlorine are present?

2

What is the chemical formula for the model below?

2H2O2

How many total Atoms are represented in the following Chemical Formula? Al(NO3)3

13Aluminum 1, Nitrogen 3, Oxygen 9

How many total Atoms of Carbon are found in (CH3)2CO?

3

Calcium Chloride is made up of 1 Atom of Calcium and 2 Atoms of Chlorine, what is the formula for the Molecule?

CaCl2

Describe the Chemical Formula for 2BaCl2

2 Molecules, each made up of 1 Barium and 2 Chlorine

CaCO3  CaO + CO2

What is the Reactant?CaCO3

What is the Product?CaO + CO2

What is the symbol for Yield?->

What is the description of the chemical reaction represented by the chemical equation below?

H2 + O2H2O2

2 Atoms of Hydrogen react with 2 Atoms of Oxygen and it Yields 1

Molecule of

Hydrogen Peroxide

How many molecules are there in the formula 4K2NO3?

4

How many atoms are there of each element in the formula 4K2NO3?

Potassium-8Nitrogen-4Oxygen-12

What is the product of the following equation?

H2CO3  H2O + CO2

H2O + CO2

What does the law of Conservation of Mass state?

Mass can neither be created nor destroyed.

Does the following equation follow the Law of Conservation of Mass?

BaSO4 + H2SO4  Ba(HSO4)2

YES

Does the following equation follow the Law of Conservation of Mass?

SO3 + 2H2O H2SO + H2SO4 -

NO

How many atoms of oxygen are in a molecule of Carbon Dioxide?

2

PRE-AP

Balance this equation.

__Fe +__ Cl2  __FeCl3

2 Fe + 3 Cl2   2 FeCl3

Balance this equation.

__H2 +__ O2  __H2O

2 H2 +O2 2 H2O