Chemical Formulas and Reactions

CH₂Cu₈ - How many Copper atoms are in this formula?

• 1

• 2

• 8

• 16

What is the coefficient for this formula? 9NaCl₂

• 9

• 2

• 1

• 11

Is this equation balanced?

2H₂O yields H₂ + 2O₂

• Yes

• No

Tags

NGSS.MS-PS1-5

What type of reaction is shown in the following chemical equation:
NH₃ + HCl → NH₄Cl?

• Decomposition
• Double-replacement
• Single-replacement
• Synthesis

What type of reaction is this?
CaBr₂ + Na₂CO₃ → CaCO₃ + 2NaBr.

• Decomposition
• Double-replacement
• Single-replacement
• Synthesis

Each substance on the left side of the arrow in a chemical equation is a ____.

• catalyst
• coefficient
• product
• reactant

Tags

NGSS.MS-PS1-5

Is this equation balanced: 2H₂ + O₂ →H₂O ?

• no
• yes

Tags

NGSS.MS-PS1-5

Na + Cl2 → NaCl Coefficient for Sodium

• 1
• 2
• 4
• 5

Tags

NGSS.HS-PS1-7

3Ca + 2AlCl₃ --> 3CaCl₂ + 2Al

• Synthesis
• Decomposition
• Single diplacement
• Double displacement

Tags

NGSS.MS-PS1-5

NGSS.MS-PS1-2

2NO₂ --> N₂ + 2O₂

• Synthesis
• Decomposition
• Single displacement
• Combustion

Tags

NGSS.MS-PS1-5

NGSS.MS-PS1-2