chemical reactions

Front

Which of the following models best demonstrates a balanced chemical equation? Options: F, G, H, J

Back

F

Front

Why must chemical equations be balanced?

Back

Based on the Law of Conservation of Matter, matter cannot be created or destroyed.

Front

Balance this equation...

HgO --> Hg + O₂

Back

2HgO --> 2Hg + O₂

Front

Balance this equation...

H₂ + Cl₂ --> HCl

Back

H₂ + Cl_{2 -->} 2HCl

Front

Reactants in the reaction: 2Mg + O₂ ---> 2MgO

Back

Mg and O₂

Front

How many Nitrogen (N) atoms are in 4NH₃?

Back

4

Front

Is this equation balanced?

Back

No

Front

To balance an equation you should:

Back

ONLY change coefficients.

Front

solid sodium reacts with chlorine gas to produce solid sodium chloride. The correct UNBALANCED equation is:

NaCl_(s)→ Cl _(g) + Na _(s)

,

Na _(s)+ CO_{2 (g)} → NaCO_{2 (s)}

,

Na _(s) + Cl_{2 (g)}→ NaCl _(s)

,

Na _(s) + Cl _(g) → NaCl _(s)

Back

Na _(s) + Cl_{2 (g)}→ NaCl _(s)

Front

Unbalanced equation for reaction of hydrogen gas with solid sulfur to produce dihydrogen monosulfide.

Back

H_{2 (g)}+ S _(s)→ H₂S _(g)