Chemical Reactions Basics

The reactants are on the left side of the chemical equation.

• True
• False

Tags

NGSS.MS-PS1-5

The Law of Conservation of Mass states

• that matter exists in all states and reacts the same

• that matter can only be changed into new substances by introducing a catalyst

• that matter exists in the same state throughout any chemical change

• that matter cannot be created or destroyed and that the mass of the products must equal the mass of the reactants

Tags

NGSS.MS-PS1-5

In the reaction above water is a ________________.

• Reactant

• Product

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

CH₄ + 2 O₂ → CO₂ + 2H₂O
 In this equation, CH₄ is a

• product
• reactant
• displacement

Tags

NGSS.MS-PS1-5

Si + S₈ →Si₂S₄

• Synthesis (combination)
• Decomposition
• Single replacement
• Double replacement

Ca + AlCl3→ CaCl_{2 +} Al

• Synthesis (combination)
• Decomposition
• Single replacement
• Double replacement

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

KOH + H₃PO₄ → K₃PO₄ + H₂O

• Synthesis (combination)
• Decomposition
• Single replacement
• Double replacement

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Pb(NO₃)₂ →PbO + NO₂ + O₂

• Synthesis (combination)
• Decomposition
• Single replacement
• Combustion

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Mg + N₂ →Mg₃N₂

• Synthesis (combination)
• Decomposition
• Single replacement
• Combustion

Tags

NGSS.MS-PS1-1

NGSS.MS-PS1-5

NO₂ →N₂ + O₂

• Synthesis (combination)
• Decomposition
• Single replacement
• Combustion

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5