Chemical Equations

The products of a reaction have the same ________as the reactants.

• molecule

• atoms

• subscripts

• coefficients

Tags

NGSS.MS-PS1-5

When balancing this equation, Fe + Cl₂ → FeCl₃, the correct coefficient for Cl₂?

• 1

• 2

• 3

• 4

Tags

NGSS.MS-PS1-5

Chemical reactions

• create and destoy atoms

• only occurs outside living organisms

• occurs only in living organisms

• produce new substances

Tags

NGSS.MS-PS1-5

NGSS.MS-PS1-2

NGSS.MS-LS1-7

What does this symbol Δ above the arrow mean?

• a precipitate is form

• heat is supplied

• a calalyst is needed

• electricity is needed

Tags

NGSS.MS-PS3-4

NGSS.MS-PS3-5

Balance this equation, CaCO₃(s) → CaO(s) + CO₂(g)?

• 3,1,2

• 1,1,1

• 1,3,1

• 2,6,3

Tags

NGSS.MS-PS1-5

Balance this equation, AlCl₃ + NaOH → Al(OH)₃ + NaCl

• 3,1,3,1

• 1,3,3,1

• 1,1,1,3

• 1,3,1,3

Tags

NGSS.MS-PS1-5

Balance the following equation: Cr(s) + Fe(NO₃)₂ (ag) → Fe(s) + Cr(NO₃)₃ (ag)

• 2,3,3,2

• 2,3,2,3

• 4,6,6,2

• 1,3,3,1

Tags

NGSS.MS-PS1-5

Chemical equations

• give directions for naming compounds

• describe only biological changes

• describe chemical reactions

• show how to write formulas

Tags

NGSS.MS-PS1-5

In the chemical equation H₂O₂(ag) → H₂O(l) + O₂(g), the O₂ is a

• reactants

• yield

• products

• solid

Tags

NGSS.MS-PS1-2

Fill in the blanks with coefficient:
PCl₅+_ H₂O→_ HCl+H₃PO₄

• 4, 5
• 1, 6
• 3, 8
• 2,2

Tags

NGSS.MS-PS1-5