Intro to Chemical Reaction Retake Ticket

Balance the following equation:

​ ​ (a)   N₂ + ​ (b)   H₂ --> ​ (c)   NH₃

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Balance the following Equation

​ ​ (a)   Na₃PO₄ + ​ (b)   MgCl₂ → ​ ​ (c)   Mg₃(PO₄)₂ + ​ ​ (d)   NaCl

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Which things in this equation are considered "reactants" (select all!)

• Methane (CH4)

• Oxygen (O2)

• Carbon Dioxide (CO2)

• Water (H20)

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Which things in this equation are considered "products" (select all!)

• Methane (CH4)

• Oxygen (O2)

• Carbon Dioxide (CO2)

• Water (H20)

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Which things in this equation have a coefficient in front of them (select all!)

• Methane (CH4)

• Oxygen (O2)

• Carbon Dioxide (CO2)

• Water (H20)

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Label the important information in a chemical equation

a

b

c

d

Subscript

Coefficient

Liquid (state of matter)

Yields

Tags

NGSS.MS-PS1-1

22.7 grams of Phosphorous reacts with oxygen to form 28.5 grams of Phosphorous Pentoxide. How much oxygen was used in this reaction?

Sort the responses into whether they indicate a PHYSICAL or CHEMICAL change

Groups:

(a) Chemical Change

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(b) Physical Change

• Release or Energy

• Change in size or texture

• Change in state of matter

• Color Change

• Precipitate or Gas formation

• New molecules

• Same Molecules

• Dissolving

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

How do you balance a chemical equation?

• Make new molecules

• Change the Subscripts

• Change the Coefficients

• Move the arrow

Match the following symbols to what they mean in a chemical Equation

• Gas

• (l)

• Liquid

• (g)

• Aqueous

• (s)

• Solid

• (aq)