STUDY GUIDE CHEM

Which of the equations below are balanced?

• .

• .

• .

• 2Na + MgF₂ → 2NaF + Mg

Tags

NGSS.MS-PS1-5

Which principle states that during a chemical reaction matter is not created or destroyed?

• Law of Conservation of Energy
• Law of Thermodynamics
• Law of Gravity
• Law of Conservation of Mass

Tags

NGSS.MS-PS1-5

In the equation 2H₂(g) + O₂(g) → 2H₂O(l) the g stands for:

• Gas

• solid state
• liquid state
• aqueous state

Tags

NGSS.MS-PS1-4

How many Hydrogen and Oxygen atoms are in the formula Ca(C₂H₃O₂)₂?

• 8 Hydrogen atoms and 8 Oxygen atoms
• 4 Hydrogen atoms and 4 Oxygen atoms
• 2 Hydrogen atoms and 2 Oxygen atoms
• 6 Hydrogen atoms and 6 Oxygen atoms

Tags

NGSS.MS-PS1-1

What are the reactants in the equation below?

• N₂ and H₂

• The reactants are sodium and chloride
• The reactants are carbon dioxide and glucose
• The reactants are oxygen and water

Tags

NGSS.MS-PS1-1

NGSS.MS-PS1-2

NGSS.MS-PS1-5

What are the products from the equation above?

• A. NH₃

• C. 15 and 21
• A. 5 and 7
• B. 10 and 14

Tags

NGSS.MS-PS1-1

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Balance the following chemical equation: H₂ + Cl₂ → HCl

• H₂ + Cl₂ → 2HCl
• H₂ + Cl₂ → H2Cl₂
• H₂ + Cl₂ → HCl₂
• H₂ + Cl₂ → H2Cl

Tags

NGSS.MS-PS1-5

In the equation: 2Al + 3Fe(NO₃)₂ → 3Fe + 2Al(NO₃)₃, iron has been replaced by:

• Aluminum
• Lead
• Zinc
• Copper

Tags

NGSS.MS-PS1-5

What type of reaction is shown below?

• Single displacement reaction

• Combustion reaction
• Decomposition reaction
• Synthesis reaction

What type of reaction is shown below?

• Decomposition reaction
• Single displacement reaction
• Synthesis reaction
• Combustion reaction