Chemistry Reactions

Is this reaction balanced? If not, select the choice that best explains why it is not balanced. Mg(NO₃)₂ + 2Na --> 2NaNO₃ + Mg

• No because Mg is not balanced

• No because N is not balanced

• No because Na is not balanced

• No because O is not balanced

• yes

Tags

NGSS.MS-PS1-5

What would the products of this reaction be? K₂O --> ?

• K + O

• K₂ + O

• K₂ + O₂

• K + O₂

• K₂O

Tags

NGSS.MS-PS1-2

Predict the products from this reaction: KCl + Mg --> ?

• MgCl₂ + K₂

• K₂Mg + Cl₂

• MgCl₂ + K

• KCl + Mg

• MgCl + K

Tags

NGSS.MS-PS1-1

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Predict the products from the following reaction:

NaCl + Cu -->

• NaCl + Cu

• CuCl₂ + Na

• NaCu + Cl₂

• CuCl + Na

• Na + Cl₂ + Cu

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

We have to balance formulas due to the law of conservation of ____

• mass/matter.

• energy.

• temperature.

• mete.

Tags

NGSS.MS-PS1-5

Balance the following equation:

___ H₂O₂(aq) →___ H₂O + ___O₂(g)

What are the correct coefficients?

• 121

• 221

• 443

• 112

Tags

NGSS.MS-PS1-5

This gas extinguished burning wooden splinter with a pop sound. Name this gas.

• Ammonia

• Nitrogen dioxide

• Hydrogen

• Oxygen

Tags

NGSS.MS-PS1-2

An experiment released a colourless gas which rekindles glowing wooden splinter. The gas released is........

• Carbon dioxide

• Hydrogen

• Nitrogen

• Oxygen

A reaction between solution A and substance B produce a colourless gas. The gas release turns the lime water into cloudy. The gas is ........

• nitrogen dioxide

• carbon monoxide

• sulphur dioxide

• carbon dioxide

Tags

NGSS.MS-PS1-2

What is the formula of an ionic compound formed from Lithium and Oxygen?

• Li₂O

• LiO₂

• 2LiO

• Li2O

Tags

NGSS.MS-PS1-1