Chemical Reactions and Equations

AB + CD →AD + CB

• Double Replacement
• Single Replacement
• Synthesis
• Decomposition

Which of the following is an example of synthesis?

• Na + Br₂ --> NaBr
• KClO₃ --> KCl + O₂
• HgO + Cl₂-->HgCl + O₂
• Cl₂ + NaBr --> NaCl + Br₂

Tags

NGSS.MS-PS1-1

NGSS.MS-PS1-5

Which of the following is the general formula for a decomposition reaction?

• A + B  → AB
• AB → A + B
• AB + C → AC + B
• AB + CD → AC + BD

2NaCl →2Na +Cl₂

• Synthesis Reaction
• Decomposition Reaction
• Single Displacement Reaction
• Double Displacement Reaction

Tags

NGSS.MS-PS1-2

Which of the following is a sign that a chemical reaction has occurred?

• change in shape
• melting
• formation of a gas
• dissolving

Tags

NGSS.MS-PS1-2

Which is a chemical change?

• freezing fruit juice
• slicing a potato
• boiling water
• copper metal turning green

Tags

NGSS.MS-PS1-2

What causes a chemical reaction when you prepare scrambled eggs?

• cracking the eggs in a pan
• heating the eggs in a pan
• putting pepper on the eggs
• putting the eggs on a plate

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

NGSS.MS-LS1-7

What type of reaction is illustrated below?

Zn + H₂S --> ZnS + H₂

• synthesis

• decomposition

• single replacement

• double replacement

Tags

NGSS.MS-PS1-2

The left side of the equation below is called

• Products
• Reactants

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-1

The right side of the equation below is called the

• products
• reactants

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5