Basics of a Chemical Reaction

What type of chemical reaction is:
4Si + S₈ --> 2Si₂S₄

• Synthesis
• Decomposition
• Single displacement
• counting counDouble displacement

What type of chemical reaction is: 3KOH + H₃PO₄ --> K₃PO₄ + 3H₂O

• Synthesis 
• Decomposition
• Single displacement
• Double displacement

What are the red numbers called in a chemical reaction?
3KOH + H₃PO₄ --> K₃PO₄ + 3H₂O

• Subscripts
• Superscripts
• Coefficients
• Reactants

What is the red side of the reaction called ?
3KOH + H₃PO₄ --> K₃PO₄ + 3H₂O

• Subscripts
• Products
• Coefficients
• Reactants

What type of chemical reaction is: 2Pb(NO₃)₂ --> 2PbO + 4NO₂ + O₂

• Synthesis 
• Decomposition
• Single displacement
• Combustion

What type of chemical reaction is: 2NO₂ --> N₂ + 2O₂

• Synthesis
• Decomposition
• Single displacement
• Combustion

You know you a chemical reaction has occurred if 

• there is a precipitate.
• there is a color change.
• there is a temperature change.
• All of these answers are evidence.

What type of chemical reaction is: CH₄ + 2O₂ --> CO₂ + 2H₂0

• Synthesis
• Decomposition
• Replacement
• Combustion

How many Hydrogen are in 4H₂O?

• 6
• 8
• 2
• 4

Tags

NGSS.MS-PS1-1

How many Oxygen are in H₂O?

• 1
• 2
• 0
• 4

Tags

NGSS.MS-PS1-1