Unit 7: Chemical Reactions

____Al + ____O₂ --> ____Al₂O₃

When the reaction is balanced, what is the correct coefficient for O₂

• 1

• 2

• 3

• 4

Tags

NGSS.MS-PS1-5

Identify the type of reaction below

2 Mg + TiO₂ --> Ti + 2 MgO

• Synthesis

• Decomposition

• Single Replacement

• Double Replacement

• Combustion

Magnesium metal reacts with HNO₃ to produce hydrogen gas and magnesium nitrate.

Which of the following is the correct balanced equation from the word equation above?

• Mg + HNO₃ --> H + MgNO₃

• Mg + 2HNO₃ --> H₂ + Mg(NO₃)₂

• Mg + HNO₃ --> H₂ + Mg(NO₃)₂

• Mg + 2HNO₃ --> 2H + Mg(NO₃)₂

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Identify the type of reaction below

2CuCl --> 2Cu + Cl₂

• Synthesis

• Decomposition

• Single Replacement

• Double Replacement

• Combustion

Iron burns in oxygen to form a black solid, iron (III) oxide.

Which of the following is the correct balanced equation from the word equation above?

• Fe + O --> Fe₃O

• 6 Fe + O₂ --> 2 Fe₃O

• 4 Fe + 3 O₂ --> 2 Fe₂O₃

• 4 Fe + 6 O --> 2 Fe₂O₃

Tags

NGSS.MS-PS1-5

What is the missing product in the following equation?

____Zn + ____H₂SO₄ --> ____ZnSO₄ + ____?

• H₂S

• H₂

• H₂O

• H

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

The following is what type of reaction:

PbCl₂ + AgNO₃ → Pb(NO₃)₂ + AgCl

• Synthesis

• Decomposition

• Single Replacement

• Double Replacement

The red numbers in the image below represent ________

• subscripts
• coefficients
• I don't know, and don't want to try
• None of the answers are correct

The blue numbers in the image below represent ________

• I don't know, and don't want to try
• coefficients
• subscripts
• none of the answers are correct

Tags

NGSS.HS-PS1-7

The substances at the beginning of a chemical equation are called the ____

• product
• yield
• chemical symbol
• reactants

Tags

NGSS.MS-PS1-5