Science 10 Final Exam Review: WHMIS Symbols Matching

What WHMIS symbol represents flammable and combustible materials?

What is the atomic number of the element with the mass number 14?

What is the name of the ion with the symbol Cl-?

What is the name of the ionic compound with the formula MgCl2?

What is the chemical formula for the ionic compound named aluminum oxide?

What is the chemical formula for the molecular compound named sulfur dioxide?

What type of chemical reaction occurs in the equation: solid mercuric oxide → liquid mercury + oxygen gas?

In the equation: solid calcium carbonate → solid calcium oxide + carbon dioxide gas, how many moles of solid calcium carbonate are needed to produce 2 moles of carbon dioxide gas?

What is the molar mass of NaCl(s)?

What is the type of chemical reaction represented by the equation: _____ Cu(s) + _____ S(s) → _____ Cu2S(s)?

In the equation: _____ KCl(s) → _____ K(s) + _____ Cl2(g), what is the coefficient for KCl(s) when the equation is balanced?

What is the molar mass of Pb(NO3)2(s)?

How many moles of Ag2SO4(s) are present in 77.95g of the substance?

What is the molar mass of CH3COOH(l)?

In the equation: _____ Fe2O3(s) + _____ H2(g) → _____ Fe(s) + ______ H2O(l), what type of chemical reaction is being represented?

In the equation: _____ FeCl3(aq) + _____ NaOH(aq) → _____ Fe(OH)3(s) + _____ NaCl(s), what is the coefficient for Fe(OH)3(s) when the equation is balanced?

Chemical Symbols and Compounds

The WHMIS symbol for flammable and combustible materials is represented by a flame icon.
The element with a mass number of 14 is silicon (Si), which has an atomic number of 14.
The ion with the symbol Cl- is called chloride.

Ionic Compounds

The ionic compound with the formula MgCl2 is named magnesium chloride.
Aluminum oxide has the chemical formula Al2O3.
Sulfur dioxide is represented by the chemical formula SO2.

Chemical Reactions

The reaction of solid mercuric oxide producing liquid mercury and oxygen gas is a decomposition reaction.
To produce 2 moles of carbon dioxide gas from solid calcium carbonate (CaCO3), 2 moles of solid calcium carbonate are needed.

Molar Mass and Balancing Equations

The molar mass of sodium chloride (NaCl) is approximately 58.44 g/mol.
The reaction represented by Cu(s) + S(s) → Cu2S(s) is a synthesis reaction.
In the balanced equation KCl(s) → K(s) + Cl2(g), the coefficient for KCl(s) is 2.

More Molar Mass and Reactions

The molar mass of lead(II) nitrate (Pb(NO3)2) is approximately 331.2 g/mol.
To find the number of moles in 77.95g of silver sulfate (Ag2SO4), the molar mass is needed; it is approximately 311.8 g/mol leading to about 0.25 moles.
The molar mass of acetic acid (CH3COOH) is approximately 60.05 g/mol.
The reaction Fe2O3(s) + H2(g) → Fe(s) + H2O(l) is a reduction reaction.
In the equation FeCl3(aq) + NaOH(aq) → Fe(OH)3(s) + NaCl(s), the coefficient for Fe(OH)3(s) when balanced is 1.

Test your knowledge of Workplace Hazardous Materials Information System (WHMIS) symbols by matching the numbers to the appropriate WHMIS symbol for different types of hazardous materials.