Chemistry Exam Review

Ionic bonds are formed when electrons are:

• shared

• transferred

• blown up

• glued together

_P₄+_O₂ →  _P₂O₃

• 3 P₄+1 O₂ → 2 P₂O₃
• 1 P₄+1 O₂ → 2 P₂O₃
• 1 P₄+ 3 O₂ → 2 P₂O₃
• 1 P₄+ 2 O₂ → 3 P₂O₃

Tags

NGSS.HS-PS1-7

_AlBr₃ + _K₂SO₄ → _KBr + _Al₂(SO₄)₃

• 6 AlBr₃ + 1 K₂SO₄ → 6 KBr + 1 Al₂(SO₄)₃
• 2 AlBr₃ + 3 K₂SO₄ → 6 KBr + 1 Al₂(SO₄)₃
• 1 AlBr₃ + 1 K₂SO₄ → 2 KBr + 3 Al₂(SO₄)₃
• 2 AlBr₃ + 3 K₂SO₄ → 1 KBr + 2 Al₂(SO₄)₃

Tags

NGSS.HS-PS1-2

NGSS.HS-PS1-7

How many total atoms are represented?         4Al₂O₃

• 2
• 8
• 5
• 20

Which type of reaction is:

2 NaBr + Ca(OH)₂ → CaBr₂ + 2 NaOH

• Synthesis
• Single Displacement
• Double Displacement
• Combustion

Which type of reaction is: C₂H₄ + 3 O₂ → 2 CO₂ + 2 H₂O

• Synthesis
• Decomposition
• Single Displacement
• Combustion

Which type of reaction is:

2 H₃AsO₄ → As₂O₅ + 3 H₂O

• Synthesis
• Decomposition
• Single Displacement
• Combustion

Which type of reaction is:

3 Pb + 2 H₃PO₄ → 3 H₂ + Pb₃(PO₄)₂

• Synthesis
• Single Displacement
• Double Displacement
• Combustion

In the following reaction, what sign is there that a precipitation reaction took place?
AgNO₃ (aq) + NaOH (aq) → AgOH (s) + NaNO₃ (aq)

• The formation of a nitrate
• The (aq), meaning aqueous or dissolved in water
• The (s), meaning the formation of a solid
• The base (OH) reactant 

what is the name of CCl₄?

• carbon tetrachloride

• monocarbon tetrachloride

• tetracarbon monochloride

• carbon chloride