Chemical Changes in the Lab

Observations: Which Reaction made a glowing splint RELIGHT and made a warm and bubbling mixture?

• Reaction 2

• Reaction 3

• Reaction 4

• Reaction 5

Tags

NGSS.MS-PS1-2

Observations: Which Reaction made blue precipitate?

• Reaction 2

• Reaction 3

• Reaction 4

• Reaction 5

Observations: Which Reaction made reddish brown precipitate and caused a blue solution to lose its colour?

• Reaction 2

• Reaction 3

• Reaction 4

• Reaction 5

Observations: Which Reaction had a bubbling silver solid, whose gas made a burning splint pop?

• Reaction 1

• Reaction 2

• Reaction 3

• Reaction 4

Observations: Which Reaction created bright light and produced a white, powdery solid?

• Reaction 1

• Reaction 2

• Reaction 3

• Reaction 4

Choose the correct products:

Magnesium + oxygen -->

• Magnesium II Oxide

• Magnesium Oxide

• Oxygen Magneside

• Magnesium Monoxide

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

What is the correct chemical (skeletal) equation for reaction 1 (burning magnesium): (All formulas have to be correct but it doesn't have to be balanced.)

• MgO -->Mg + O₂

• MgO -->Mg + O

• Mg + O₂ --> MgO

• Mg + O --> MgO

What is the correct BALANCED equation for reaction 1 (burning magnesium):

• Mg + O --> MgO

• Mg +2O₂ --> 2MgO

• 2 Mg + O₂ --> Mg₂O₂

• 2Mg + O₂ --> 2MgO

Tags

NGSS.MS-PS1-5

What type of reaction was reaction 1 (magnesium+O₂)?

• synthesis

• decomposition

• single displacement

• double displacement

What best describes the chemical equation for reaction 2 (the dihydrogen dioxide aka hydrogen peroxide reaction)

• H₂O_{2 (l)-->} 0_{2 (g)+} H_{2 (g) with MnO2 as a catalyst (not part of the reaction)}

• H₂O_{2 (l)-->} 0_{2 (g)+} H₂O _{(l) with MnO2 as a catalyst (not part of the reaction)}

• H₂O _(l)--> 0_{2 (g)+} H₂O_{2 (l) with MnO2 as a catalyst (not part of the reaction)}

• H₂O_{2 (l)-->} H_{2 (g)+} H₂O _{(l) with MnO2 as a catalyst (not part of the reaction)}

Tags

NGSS.HS-PS1-4