Grade 10 Chemistry

Identify this type of reaction: 
Al (s) + HCl (aq) → AlCl₃ (aq) + H₂ (g)

• Precipitation
• Synthesis
• Combustion
• Single Replacement

When balancing equations, the rule is that you can only add, change, and remove ____________

• Coefficients

• Mass

• Subscripts

• Elements

The formation of water is an example of a ________ reaction because two simple substances (H and O) combine to produce a new compound (H₂O).

• Single Displacement
• Decomposition
• Double Replacement
• Synthesis

The following reaction is an example of what reaction type? 
CoCO₃ → CoO + CO₂

• Synthesis
• Decomposition
• Single Replacement
• Double Replacement

Which coefficients balance this equation:
NH₃  +  O₂ ---->   NO  + H₂O

• 2,3,5,6
• 5,5,4,6
• 4,6,4,5
• 4,5,4,6

Balance this equation.

_CH₄ + _O₂ --> _CO₂ + _H₂O

• 1,2,1,1

• 2,1,2,1

• 1,2,1,2

• 0,2,0,2

Which of the following is an example of synthesis?

• Na + Br₂ --> NaBr
• KClO₃ --> KCl + O₂
• HgO + Cl₂-->HgCl + O₂
• Cl₂ + NaBr --> NaCl + Br₂

Which of the following is an example of decomposition?

• Na + Br₂ --> NaBr
• KClO₃ --> KCl + O₂
• HgO + Cl₂-->HgCl + O₂
• Cl₂ + NaBr --> NaCl + Br₂

Write a complete balanced reaction for the following.
Liquid butane, C₄H₈, is burned in the presence of gaseous oxygen.

• C₄H₈ (l) + 6 O₂ (g) --> 4 CO₂ (g) + 4 H₂O (g)
• C₄H₈ (l) + 12 O (g) --> 4 CO₂ (g) + 4 H₂O (g)
• C₄H₈ (l) + 12 O₂ (g) --> 4 CO₂ (g) + 4 H₂O (g)
• C₄H₈ (l) + 5 O₂ (g) --> 4 CO₂ (g) +  O₂ (g) + 4 H₂ (g)

What is the correct name for Al(NO₃)₃?

• Aluminum nitrate

• Aluminum(III) nitrate

• Aluminum nitrite

• Aluminum nitrogen trioxide