Test #3 Review Questions
8SO3
Identify the coefficient in the formula below and tell what it means
8SO3
Identify the coefficient in the formula below and tell what it means
TELLS THE NUMBER OF MOLECULES PRESENT- IN THIS CASE, THERE ARE 8
MOLECULES
2AgNO3 + CaCl2 → AgCl + Ca(NO3)2
Chemical equations like the one below represent…
2AgNO3 + CaCl2 → AgCl + Ca(NO3)2
Chemical equations like the one below represent…
CHEMICAL CHANGES
8S + 12O2 → 8SO3
Identify the products and reactants in the equation below.
8S + 12O2 → 8SO3
Identify the products and reactants in the equation below.
REACTANTS PRODUCTS
8SO3
Identify the subscript in the formula below and tell what it means
8SO3
Identify the subscript in the formula below and tell what it means
TELLS THE NUMBER OF ATOMS PRESENT- IN THIS
CASE, THERE ARE 24 ATOMS OF OXYGEN
temperature changegas produced color change
The list below identifies what…
temperature changegas produced color change
Signs that a chemical change has occurred
The list below identifies what…
Cu + CO2 CuCO2
Determine if the equation below is balanced or unbalanced.
Cu + CO2 CuCO2
Determine if the equation below is balanced or unbalanced.
Cu = 1C= 1O = 2
BALANCED
Cu = 1C= 1O = 2
Elements in the same group have what in common?
Valence electrons Chemical properties
Elements in the same group have what in common?
What is the Law of Conservation of Mass?
Matter cannot be created nor destroyed
What is the Law of Conservation of Mass?
Where are non-metals located on the periodic table?
Right side of the stair-step
Where are non-metals located on the periodic table?
The formulas below represent examples of…
CO2 H2O NaCl SO4
Compound molecules
The formulas below represent examples of…
CO2 H2O NaCl SO4
7CaCl2
How many atoms of Calcium and Chlorine are in the formula below?
7CaCl2
How many atoms of Calcium and Chlorine are in the formula below?
7 CALCIUM ATOMS14 CHLORINE ATOMS
4CuSO4
How many molecules are present in the formula below?
4CuSO4
How many molecules are present in the formula below?
4 MOLECULES
Cl + O2 Cl2O3
Determine if the equation below is balanced or unbalanced.
Cl + O2 Cl2O3
Determine if the equation below is balanced or unbalanced.
Cl = 1O = 2
UNBALANCED
Cl = 2O = 3
