Chemistry Reactions

How many atoms of aluminum are on each side of the following equation: 4Al + 3O₂ --> 2Al₂ O₃

• 2

• 6

• 1

• 4

Tags

NGSS.MS-PS1-1

NGSS.MS-PS1-5

What is the part of the chemical equation in green called? Fe + S --> FeS

• products

• reactants

• yield

• chemical formula

A reaction that gives off heat to its surroundings is...

• exothermic

• endothermic

• endergonic

• none of these

Tags

NGSS.HS-PS1-4

Which type of reaction will feel cold?

• exothermic

• exergonic

• endothermic

• none of these

Tags

NGSS.HS-PS1-4

Which coefficient must go in the missing spot to balance the chemical equation?

___Cu + O₂ --> 2Cu₂O

• 4

• 1

• 5

• 3

Tags

NGSS.MS-PS1-5

What type of reaction is below?

CH₄ + O₂ --> CO₂ + H₂O

• Combination/Synthesis

• Decomposition

• Single Replacement

• Double Replacement

• Combustion

What type of reaction is below? Cu₂O + K --> K₂O + Cu

• Combination/Synthesis

• Decomposition

• Double Replacement

• Combustion

• Single Replacement

What type of reaction is below? H₂O --> H₂ + O₂

• Combination/Synthesis

• Decomposition

• Single Replacement

• Double Replacement

Tags

NGSS.MS-PS1-2

Predict the products of this reaction: MgO + Li --> ?

• LiO + Mg

• MgO + Li

• Li₂O + Mg

• LiMg + O

• MgLi + O

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Predict the products: C₂H₆ + O₂ --> ?

• H₂O + O₂

• CO₂ + H₂O

• C + O₂

• CO₂ + H₂O₂

• CH + O₂

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2